^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) USB Driver layer for GSM modems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) History: see the git log.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) This driver exists because the "normal" serial driver doesn't work too well
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) with GSM modems. Issues:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) - data loss -- one single Receive URB is not nearly enough
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) - controlling the baud rate doesn't make sense
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define DRIVER_DESC "USB Driver for GSM modems"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/usb/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include "usb-wwan.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Generate DTR/RTS signals on the port using the SET_CONTROL_LINE_STATE request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * in CDC ACM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int usb_wwan_send_setup(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int ifnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (portdata->dtr_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) val |= 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (portdata->rts_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) val |= 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) res = usb_autopm_get_interface(serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 0x22, 0x21, val, ifnum, NULL, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) USB_CTRL_SET_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) usb_autopm_put_interface(port->serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) void usb_wwan_dtr_rts(struct usb_serial_port *port, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct usb_wwan_intf_private *intfdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) intfdata = usb_get_serial_data(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (!intfdata->use_send_setup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* FIXME: locking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) portdata->rts_state = on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) portdata->dtr_state = on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) usb_wwan_send_setup(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) EXPORT_SYMBOL(usb_wwan_dtr_rts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int usb_wwan_tiocmget(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned int value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ((portdata->dtr_state) ? TIOCM_DTR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ((portdata->cts_state) ? TIOCM_CTS : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ((portdata->dsr_state) ? TIOCM_DSR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ((portdata->dcd_state) ? TIOCM_CAR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ((portdata->ri_state) ? TIOCM_RNG : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) EXPORT_SYMBOL(usb_wwan_tiocmget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int usb_wwan_tiocmset(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) unsigned int set, unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct usb_wwan_intf_private *intfdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) intfdata = usb_get_serial_data(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (!intfdata->use_send_setup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* FIXME: what locks portdata fields ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (set & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) portdata->rts_state = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (set & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) portdata->dtr_state = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (clear & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) portdata->rts_state = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (clear & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) portdata->dtr_state = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return usb_wwan_send_setup(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) EXPORT_SYMBOL(usb_wwan_tiocmset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int usb_wwan_get_serial_info(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) ss->line = port->minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ss->port = port->port_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ss->baud_base = tty_get_baud_rate(port->port.tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) ss->close_delay = jiffies_to_msecs(port->port.close_delay) / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ss->closing_wait = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ASYNC_CLOSING_WAIT_NONE :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) jiffies_to_msecs(port->port.closing_wait) / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) EXPORT_SYMBOL(usb_wwan_get_serial_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int usb_wwan_set_serial_info(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned int closing_wait, close_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) close_delay = msecs_to_jiffies(ss->close_delay * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ASYNC_CLOSING_WAIT_NONE :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) msecs_to_jiffies(ss->closing_wait * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) mutex_lock(&port->port.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (!capable(CAP_SYS_ADMIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if ((close_delay != port->port.close_delay) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) (closing_wait != port->port.closing_wait))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) retval = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) retval = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) port->port.close_delay = close_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) port->port.closing_wait = closing_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) mutex_unlock(&port->port.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) EXPORT_SYMBOL(usb_wwan_set_serial_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) const unsigned char *buf, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct usb_wwan_intf_private *intfdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int left, todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct urb *this_urb = NULL; /* spurious */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) intfdata = usb_get_serial_data(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) dev_dbg(&port->dev, "%s: write (%d chars)\n", __func__, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) left = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) for (i = 0; left > 0 && i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) todo = left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (todo > OUT_BUFLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) todo = OUT_BUFLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) this_urb = portdata->out_urbs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (test_and_set_bit(i, &portdata->out_busy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (time_before(jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) portdata->tx_start_time[i] + 10 * HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) usb_unlink_urb(this_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dev_dbg(&port->dev, "%s: endpoint %d buf %d\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) usb_pipeendpoint(this_urb->pipe), i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) err = usb_autopm_get_interface_async(port->serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) clear_bit(i, &portdata->out_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* send the data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) memcpy(this_urb->transfer_buffer, buf, todo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) this_urb->transfer_buffer_length = todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) spin_lock_irqsave(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (intfdata->suspended) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) usb_anchor_urb(this_urb, &portdata->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) spin_unlock_irqrestore(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) intfdata->in_flight++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) spin_unlock_irqrestore(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) err = usb_submit_urb(this_urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dev_err(&port->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) "%s: submit urb %d failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) __func__, i, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) clear_bit(i, &portdata->out_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) spin_lock_irqsave(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) intfdata->in_flight--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) spin_unlock_irqrestore(&intfdata->susp_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) usb_autopm_put_interface_async(port->serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) portdata->tx_start_time[i] = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) buf += todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) left -= todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) count -= left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_dbg(&port->dev, "%s: wrote (did %d)\n", __func__, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) EXPORT_SYMBOL(usb_wwan_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static void usb_wwan_indat_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct usb_serial_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) unsigned char *data = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) endpoint = usb_pipeendpoint(urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) port = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) dev = &port->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) dev_dbg(dev, "%s: nonzero status: %d on endpoint %02x.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) __func__, status, endpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* don't resubmit on fatal errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (status == -ESHUTDOWN || status == -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (urb->actual_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) tty_insert_flip_string(&port->port, data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) urb->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) tty_flip_buffer_push(&port->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) dev_dbg(dev, "%s: empty read urb received\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Resubmit urb so we continue receiving */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) err = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (err != -EPERM && err != -ENODEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) dev_err(dev, "%s: resubmit read urb failed. (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /* busy also in error unless we are killed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) usb_mark_last_busy(port->serial->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) usb_mark_last_busy(port->serial->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static void usb_wwan_outdat_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct usb_serial_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct usb_wwan_intf_private *intfdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) port = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) intfdata = usb_get_serial_data(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) usb_serial_port_softint(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) usb_autopm_put_interface_async(port->serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) spin_lock_irqsave(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) intfdata->in_flight--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) spin_unlock_irqrestore(&intfdata->susp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) for (i = 0; i < N_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (portdata->out_urbs[i] == urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) smp_mb__before_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) clear_bit(i, &portdata->out_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) int usb_wwan_write_room(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int data_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct urb *this_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) this_urb = portdata->out_urbs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (this_urb && !test_bit(i, &portdata->out_busy))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) data_len += OUT_BUFLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) dev_dbg(&port->dev, "%s: %d\n", __func__, data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) EXPORT_SYMBOL(usb_wwan_write_room);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int usb_wwan_chars_in_buffer(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) int data_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) struct urb *this_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) this_urb = portdata->out_urbs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /* FIXME: This locking is insufficient as this_urb may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) go unused during the test */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (this_urb && test_bit(i, &portdata->out_busy))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) data_len += this_urb->transfer_buffer_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) dev_dbg(&port->dev, "%s: %d\n", __func__, data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) return data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) EXPORT_SYMBOL(usb_wwan_chars_in_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct usb_wwan_intf_private *intfdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) intfdata = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (port->interrupt_in_urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) dev_err(&port->dev, "%s: submit int urb failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /* Start reading from the IN endpoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) for (i = 0; i < N_IN_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) urb = portdata->in_urbs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) err = usb_submit_urb(urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) dev_err(&port->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) "%s: submit read urb %d failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) __func__, i, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) spin_lock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (++intfdata->open_ports == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) serial->interface->needs_remote_wakeup = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) spin_unlock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /* this balances a get in the generic USB serial code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) usb_autopm_put_interface(serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) EXPORT_SYMBOL(usb_wwan_open);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) static void unbusy_queued_urb(struct urb *urb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct usb_wwan_port_private *portdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (urb == portdata->out_urbs[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) clear_bit(i, &portdata->out_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) void usb_wwan_close(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * Need to take susp_lock to make sure port is not already being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) * resumed, but no need to hold it due to initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) spin_lock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (--intfdata->open_ports == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) serial->interface->needs_remote_wakeup = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) spin_unlock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) urb = usb_get_from_anchor(&portdata->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) unbusy_queued_urb(urb, portdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) usb_autopm_put_interface_async(serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) for (i = 0; i < N_IN_URB; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) usb_kill_urb(portdata->in_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) for (i = 0; i < N_OUT_URB; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) usb_kill_urb(portdata->out_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) usb_kill_urb(port->interrupt_in_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) usb_autopm_get_interface_no_resume(serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) EXPORT_SYMBOL(usb_wwan_close);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) int endpoint,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) int dir, void *ctx, char *buf, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) void (*callback) (struct urb *))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) usb_fill_bulk_urb(urb, serial->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) usb_sndbulkpipe(serial->dev, endpoint) | dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) buf, len, callback, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (intfdata->use_zlp && dir == USB_DIR_OUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) urb->transfer_flags |= URB_ZERO_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) int usb_wwan_port_probe(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (!port->bulk_in_size || !port->bulk_out_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (!portdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) init_usb_anchor(&portdata->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) for (i = 0; i < N_IN_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) buffer = (u8 *)__get_free_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) goto bail_out_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) portdata->in_buffer[i] = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) urb = usb_wwan_setup_urb(port, port->bulk_in_endpointAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) USB_DIR_IN, port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) buffer, IN_BUFLEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) usb_wwan_indat_callback);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) portdata->in_urbs[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) goto bail_out_error2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) portdata->out_buffer[i] = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) urb = usb_wwan_setup_urb(port, port->bulk_out_endpointAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) USB_DIR_OUT, port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) buffer, OUT_BUFLEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) usb_wwan_outdat_callback);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) portdata->out_urbs[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) usb_set_serial_port_data(port, portdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) bail_out_error2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) usb_free_urb(portdata->out_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) kfree(portdata->out_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) bail_out_error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) for (i = 0; i < N_IN_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) usb_free_urb(portdata->in_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) free_page((unsigned long)portdata->in_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) kfree(portdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) EXPORT_SYMBOL_GPL(usb_wwan_port_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) int usb_wwan_port_remove(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) usb_set_serial_port_data(port, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) for (i = 0; i < N_IN_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) usb_free_urb(portdata->in_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) free_page((unsigned long)portdata->in_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) for (i = 0; i < N_OUT_URB; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) usb_free_urb(portdata->out_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) kfree(portdata->out_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) kfree(portdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) EXPORT_SYMBOL(usb_wwan_port_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) static void stop_urbs(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) struct usb_serial_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) for (i = 0; i < serial->num_ports; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) port = serial->port[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (!portdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) for (j = 0; j < N_IN_URB; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) usb_kill_urb(portdata->in_urbs[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) for (j = 0; j < N_OUT_URB; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) usb_kill_urb(portdata->out_urbs[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) usb_kill_urb(port->interrupt_in_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) spin_lock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (PMSG_IS_AUTO(message)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (intfdata->in_flight) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) spin_unlock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) intfdata->suspended = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) spin_unlock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) stop_urbs(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) EXPORT_SYMBOL(usb_wwan_suspend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) /* Caller must hold susp_lock. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) static int usb_wwan_submit_delayed_urbs(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct usb_wwan_intf_private *data = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) int err_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) urb = usb_get_from_anchor(&portdata->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) err = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) dev_err(&port->dev, "%s: submit urb failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) err_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) unbusy_queued_urb(urb, portdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) usb_autopm_put_interface_async(serial->interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) data->in_flight++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (err_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) int usb_wwan_resume(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) struct usb_serial_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct usb_wwan_port_private *portdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) int err_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) spin_lock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) for (i = 0; i < serial->num_ports; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) port = serial->port[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (!tty_port_initialized(&port->port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) portdata = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (port->interrupt_in_urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) err = usb_submit_urb(port->interrupt_in_urb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) dev_err(&port->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) "%s: submit int urb failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) err_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) err = usb_wwan_submit_delayed_urbs(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) err_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) for (j = 0; j < N_IN_URB; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) urb = portdata->in_urbs[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) err = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) dev_err(&port->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) "%s: submit read urb %d failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) __func__, i, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) err_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) intfdata->suspended = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) spin_unlock_irq(&intfdata->susp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (err_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) EXPORT_SYMBOL(usb_wwan_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) MODULE_AUTHOR(DRIVER_AUTHOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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