https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: a3a5ac46f90397a7a52dbf556532c5f3828eb9c7 authored by dependabot[bot] on 18 July 2024, 21:26:04 UTC
build(deps): bump requests in /drivers/gpu/drm/ci/xfails
build(deps): bump requests in /drivers/gpu/drm/ci/xfails
Tip revision: a3a5ac4
mtd_test.c
// SPDX-License-Identifier: GPL-2.0
#define pr_fmt(fmt) "mtd_test: " fmt
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/printk.h>
#include "mtd_test.h"
int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
{
int err;
struct erase_info ei;
loff_t addr = (loff_t)ebnum * mtd->erasesize;
memset(&ei, 0, sizeof(struct erase_info));
ei.addr = addr;
ei.len = mtd->erasesize;
err = mtd_erase(mtd, &ei);
if (err) {
pr_info("error %d while erasing EB %d\n", err, ebnum);
return err;
}
return 0;
}
static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum)
{
int ret;
loff_t addr = (loff_t)ebnum * mtd->erasesize;
ret = mtd_block_isbad(mtd, addr);
if (ret)
pr_info("block %d is bad\n", ebnum);
return ret;
}
int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
unsigned int eb, int ebcnt)
{
int i, bad = 0;
if (!mtd_can_have_bb(mtd))
return 0;
pr_info("scanning for bad eraseblocks\n");
for (i = 0; i < ebcnt; ++i) {
bbt[i] = is_block_bad(mtd, eb + i) ? 1 : 0;
if (bbt[i])
bad += 1;
cond_resched();
}
pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
return 0;
}
int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
unsigned int eb, int ebcnt)
{
int err;
unsigned int i;
for (i = 0; i < ebcnt; ++i) {
if (bbt[i])
continue;
err = mtdtest_erase_eraseblock(mtd, eb + i);
if (err)
return err;
cond_resched();
}
return 0;
}
int mtdtest_read(struct mtd_info *mtd, loff_t addr, size_t size, void *buf)
{
size_t read;
int err;
err = mtd_read(mtd, addr, size, &read, buf);
/* Ignore corrected ECC errors */
if (mtd_is_bitflip(err))
err = 0;
if (!err && read != size)
err = -EIO;
if (err)
pr_err("error: read failed at %#llx\n", addr);
return err;
}
int mtdtest_write(struct mtd_info *mtd, loff_t addr, size_t size,
const void *buf)
{
size_t written;
int err;
err = mtd_write(mtd, addr, size, &written, buf);
if (!err && written != size)
err = -EIO;
if (err)
pr_err("error: write failed at %#llx\n", addr);
return err;
}