Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2006-2008 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Test page read and write on MTD device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <asm/div64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "mtd_test.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) static int dev = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) module_param(dev, int, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) MODULE_PARM_DESC(dev, "MTD device number to use");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) static struct mtd_info *mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static unsigned char *twopages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static unsigned char *writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static unsigned char *boundary;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static unsigned char *bbt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static int pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) static int bufsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static int ebcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static int pgcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static int errcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static struct rnd_state rnd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) static int write_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	return mtdtest_write(mtd, addr, mtd->erasesize, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static int verify_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	uint32_t j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	int err = 0, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	loff_t addr0, addrn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	addr0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	for (i = 0; i < ebcnt && bbt[i]; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		addr0 += mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	addrn = mtd->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		addrn -= mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		/* Do a read to set the internal dataRAMs to different data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		err = mtdtest_read(mtd, addr0, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		err = mtdtest_read(mtd, addrn - bufsize, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		memset(twopages, 0, bufsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		err = mtdtest_read(mtd, addr, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			       (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	/* Check boundary between eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		struct rnd_state old_state = rnd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		/* Do a read to set the internal dataRAMs to different data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		err = mtdtest_read(mtd, addr0, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		err = mtdtest_read(mtd, addrn - bufsize, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		memset(twopages, 0, bufsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		err = mtdtest_read(mtd, addr, bufsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		prandom_bytes_state(&rnd_state, boundary + pgsize, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		if (memcmp(twopages, boundary, bufsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			       (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		rnd_state = old_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static int crosstest(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	int err = 0, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	loff_t addr, addr0, addrn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	unsigned char *pp1, *pp2, *pp3, *pp4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	pr_info("crosstest\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	pp1 = kcalloc(pgsize, 4, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (!pp1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	pp2 = pp1 + pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	pp3 = pp2 + pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	pp4 = pp3 + pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	addr0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	for (i = 0; i < ebcnt && bbt[i]; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		addr0 += mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	addrn = mtd->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		addrn -= mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	/* Read 2nd-to-last page to pp1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	addr = addrn - pgsize - pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	err = mtdtest_read(mtd, addr, pgsize, pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	/* Read 3rd-to-last page to pp1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	addr = addrn - pgsize - pgsize - pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	err = mtdtest_read(mtd, addr, pgsize, pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	/* Read first page to pp2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	addr = addr0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	pr_info("reading page at %#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	err = mtdtest_read(mtd, addr, pgsize, pp2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	/* Read last page to pp3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	addr = addrn - pgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	pr_info("reading page at %#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	err = mtdtest_read(mtd, addr, pgsize, pp3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	/* Read first page again to pp4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	addr = addr0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	pr_info("reading page at %#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	err = mtdtest_read(mtd, addr, pgsize, pp4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		return err;
^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) 	/* pp2 and pp4 should be the same */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	pr_info("verifying pages read at %#llx match\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	       (long long)addr0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (memcmp(pp2, pp4, pgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		pr_err("verify failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	} else if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		pr_info("crosstest ok\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	kfree(pp1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static int erasecrosstest(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	int err = 0, i, ebnum, ebnum2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	loff_t addr0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	char *readbuf = twopages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	pr_info("erasecrosstest\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	ebnum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	addr0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	for (i = 0; i < ebcnt && bbt[i]; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		addr0 += mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		ebnum += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	ebnum2 = ebcnt - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	while (ebnum2 && bbt[ebnum2])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		ebnum2 -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	pr_info("erasing block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	err = mtdtest_erase_eraseblock(mtd, ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	pr_info("writing 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	prandom_bytes_state(&rnd_state, writebuf, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	strcpy(writebuf, "There is no data like this!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	err = mtdtest_write(mtd, addr0, pgsize, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	pr_info("reading 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	memset(readbuf, 0, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	err = mtdtest_read(mtd, addr0, pgsize, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	pr_info("verifying 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	if (memcmp(writebuf, readbuf, pgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		pr_err("verify failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	pr_info("erasing block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	err = mtdtest_erase_eraseblock(mtd, ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	pr_info("writing 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	prandom_bytes_state(&rnd_state, writebuf, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	strcpy(writebuf, "There is no data like this!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	err = mtdtest_write(mtd, addr0, pgsize, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	pr_info("erasing block %d\n", ebnum2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	err = mtdtest_erase_eraseblock(mtd, ebnum2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	pr_info("reading 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	memset(readbuf, 0, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	err = mtdtest_read(mtd, addr0, pgsize, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	pr_info("verifying 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (memcmp(writebuf, readbuf, pgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		pr_err("verify failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		pr_info("erasecrosstest ok\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static int erasetest(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	int err = 0, i, ebnum, ok = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	loff_t addr0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	pr_info("erasetest\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	ebnum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	addr0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	for (i = 0; i < ebcnt && bbt[i]; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		addr0 += mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		ebnum += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	pr_info("erasing block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	err = mtdtest_erase_eraseblock(mtd, ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	pr_info("writing 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	prandom_bytes_state(&rnd_state, writebuf, pgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	err = mtdtest_write(mtd, addr0, pgsize, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	pr_info("erasing block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	err = mtdtest_erase_eraseblock(mtd, ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	pr_info("reading 1st page of block %d\n", ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	err = mtdtest_read(mtd, addr0, pgsize, twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	pr_info("verifying 1st page of block %d is all 0xff\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	       ebnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	for (i = 0; i < pgsize; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		if (twopages[i] != 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 			pr_err("verifying all 0xff failed at %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 			       i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 			errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 			ok = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	if (ok && !err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		pr_info("erasetest ok\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static int __init mtd_pagetest_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	uint64_t tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	uint32_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	printk(KERN_INFO "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	if (dev < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		pr_info("Please specify a valid mtd-device via module parameter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 		pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	pr_info("MTD device: %d\n", dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	mtd = get_mtd_device(NULL, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	if (IS_ERR(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		err = PTR_ERR(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		pr_err("error: cannot get MTD device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		return err;
^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) 	if (!mtd_type_is_nand(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		pr_info("this test requires NAND flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	tmp = mtd->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	do_div(tmp, mtd->erasesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	ebcnt = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	pgcnt = mtd->erasesize / mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	pgsize = mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	pr_info("MTD device size %llu, eraseblock size %u, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	       "page size %u, count of eraseblocks %u, pages per "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	       "eraseblock %u, OOB size %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	       (unsigned long long)mtd->size, mtd->erasesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	       pgsize, ebcnt, pgcnt, mtd->oobsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	bufsize = pgsize * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	if (!writebuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	twopages = kmalloc(bufsize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	if (!twopages)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	boundary = kmalloc(bufsize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	if (!boundary)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	bbt = kzalloc(ebcnt, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	if (!bbt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	/* Erase all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	pr_info("erasing whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	pr_info("erased %u eraseblocks\n", ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	/* Write all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	pr_info("writing whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		err = write_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 			pr_info("written up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	pr_info("written %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	/* Check all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 		err = verify_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 		if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 			pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	err = crosstest();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	if (ebcnt > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 		err = erasecrosstest();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 		pr_info("skipping erasecrosstest, 2 erase blocks needed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	err = erasetest();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	pr_info("finished with %d errors\n", errcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 	kfree(bbt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	kfree(boundary);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	kfree(twopages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 	kfree(writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	put_mtd_device(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 		pr_info("error %d occurred\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 	printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) module_init(mtd_pagetest_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static void __exit mtd_pagetest_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) module_exit(mtd_pagetest_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) MODULE_DESCRIPTION("NAND page test");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) MODULE_AUTHOR("Adrian Hunter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) MODULE_LICENSE("GPL");