static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum);
static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
const struct ubi_vid_hdr *vid_hdr);
-static int paranoid_check_all_ff(const struct ubi_device *ubi, int pnum,
- int offset, int len);
+static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
+ int len);
#else
#define paranoid_check_not_bad(ubi, pnum) 0
#define paranoid_check_peb_ec_hdr(ubi, pnum) 0
ubi_err("error %d while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, len, pnum, offset, read);
ubi_dbg_dump_stack();
+
+ /*
+ * The driver should never return -EBADMSG if it failed to read
+ * all the requested data. But some buggy drivers might do
+ * this, so we change it to -EIO.
+ */
+ if (read != len && err == -EBADMSG) {
+ ubi_assert(0);
+ err = -EIO;
+ }
} else {
ubi_assert(len == read);
* Note, in case of an error, it is possible that something was still written
* to the flash media, but may be some garbage.
*/
-int ubi_io_write(const struct ubi_device *ubi, const void *buf, int pnum,
- int offset, int len)
+int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
+ int len)
{
int err;
size_t written;
* zero in case of success and a negative error code in case of failure. If
* %-EIO is returned, the physical eraseblock most probably went bad.
*/
-static int do_sync_erase(const struct ubi_device *ubi, int pnum)
+static int do_sync_erase(struct ubi_device *ubi, int pnum)
{
int err, retries = 0;
struct erase_info ei;
* test, a positive number of erase operations done if the test was
* successfully passed, and other negative error codes in case of other errors.
*/
-static int torture_peb(const struct ubi_device *ubi, int pnum)
+static int torture_peb(struct ubi_device *ubi, int pnum)
{
- void *buf;
int err, i, patt_count;
- buf = vmalloc(ubi->peb_size);
- if (!buf)
- return -ENOMEM;
-
patt_count = ARRAY_SIZE(patterns);
ubi_assert(patt_count > 0);
+ mutex_lock(&ubi->buf_mutex);
for (i = 0; i < patt_count; i++) {
err = do_sync_erase(ubi, pnum);
if (err)
goto out;
/* Make sure the PEB contains only 0xFF bytes */
- err = ubi_io_read(ubi, buf, pnum, 0, ubi->peb_size);
+ err = ubi_io_read(ubi, ubi->peb_buf1, pnum, 0, ubi->peb_size);
if (err)
goto out;
- err = check_pattern(buf, 0xFF, ubi->peb_size);
+ err = check_pattern(ubi->peb_buf1, 0xFF, ubi->peb_size);
if (err == 0) {
ubi_err("erased PEB %d, but a non-0xFF byte found",
pnum);
}
/* Write a pattern and check it */
- memset(buf, patterns[i], ubi->peb_size);
- err = ubi_io_write(ubi, buf, pnum, 0, ubi->peb_size);
+ memset(ubi->peb_buf1, patterns[i], ubi->peb_size);
+ err = ubi_io_write(ubi, ubi->peb_buf1, pnum, 0, ubi->peb_size);
if (err)
goto out;
- memset(buf, ~patterns[i], ubi->peb_size);
- err = ubi_io_read(ubi, buf, pnum, 0, ubi->peb_size);
+ memset(ubi->peb_buf1, ~patterns[i], ubi->peb_size);
+ err = ubi_io_read(ubi, ubi->peb_buf1, pnum, 0, ubi->peb_size);
if (err)
goto out;
- err = check_pattern(buf, patterns[i], ubi->peb_size);
+ err = check_pattern(ubi->peb_buf1, patterns[i], ubi->peb_size);
if (err == 0) {
ubi_err("pattern %x checking failed for PEB %d",
patterns[i], pnum);
err = patt_count;
out:
- if (err == UBI_IO_BITFLIPS || err == -EBADMSG)
+ mutex_unlock(&ubi->buf_mutex);
+ if (err == UBI_IO_BITFLIPS || err == -EBADMSG) {
/*
* If a bit-flip or data integrity error was detected, the test
* has not passed because it happened on a freshly erased
* physical eraseblock which means something is wrong with it.
*/
+ ubi_err("read problems on freshly erased PEB %d, must be bad",
+ pnum);
err = -EIO;
- vfree(buf);
+ }
return err;
}
* codes in case of other errors. Note, %-EIO means that the physical
* eraseblock is bad.
*/
-int ubi_io_sync_erase(const struct ubi_device *ubi, int pnum, int torture)
+int ubi_io_sync_erase(struct ubi_device *ubi, int pnum, int torture)
{
int err, ret = 0;
* o %UBI_IO_PEB_EMPTY if the physical eraseblock is empty;
* o a negative error code in case of failure.
*/
-int ubi_io_read_ec_hdr(const struct ubi_device *ubi, int pnum,
+int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum,
struct ubi_ec_hdr *ec_hdr, int verbose)
{
int err, read_err = 0;
dbg_io("read EC header from PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+ if (UBI_IO_DEBUG)
+ verbose = 1;
err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE);
if (err) {
* case of failure. If %-EIO is returned, the physical eraseblock most probably
* went bad.
*/
-int ubi_io_write_ec_hdr(const struct ubi_device *ubi, int pnum,
+int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum,
struct ubi_ec_hdr *ec_hdr)
{
int err;
* header there);
* o a negative error code in case of failure.
*/
-int ubi_io_read_vid_hdr(const struct ubi_device *ubi, int pnum,
+int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
struct ubi_vid_hdr *vid_hdr, int verbose)
{
int err, read_err = 0;
dbg_io("read VID header from PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+ if (UBI_IO_DEBUG)
+ verbose = 1;
p = (char *)vid_hdr - ubi->vid_hdr_shift;
err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,
* case of failure. If %-EIO is returned, the physical eraseblock probably went
* bad.
*/
-int ubi_io_write_vid_hdr(const struct ubi_device *ubi, int pnum,
+int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
struct ubi_vid_hdr *vid_hdr)
{
int err;
uint32_t crc, hdr_crc;
struct ubi_ec_hdr *ec_hdr;
- ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
+ ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_NOFS);
if (!ec_hdr)
return -ENOMEM;
struct ubi_vid_hdr *vid_hdr;
void *p;
- vid_hdr = ubi_zalloc_vid_hdr(ubi);
+ vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
if (!vid_hdr)
return -ENOMEM;
* @offset of the physical eraseblock @pnum, %1 if not, and a negative error
* code if an error occurred.
*/
-static int paranoid_check_all_ff(const struct ubi_device *ubi, int pnum,
- int offset, int len)
+static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
+ int len)
{
size_t read;
int err;
- void *buf;
loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
- buf = vmalloc(len);
- if (!buf)
- return -ENOMEM;
- memset(buf, 0, len);
-
- err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
+ mutex_lock(&ubi->dbg_buf_mutex);
+ err = ubi->mtd->read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf);
if (err && err != -EUCLEAN) {
ubi_err("error %d while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, len, pnum, offset, read);
goto error;
}
- err = check_pattern(buf, 0xFF, len);
+ err = check_pattern(ubi->dbg_peb_buf, 0xFF, len);
if (err == 0) {
ubi_err("flash region at PEB %d:%d, length %d does not "
"contain all 0xFF bytes", pnum, offset, len);
goto fail;
}
+ mutex_unlock(&ubi->dbg_buf_mutex);
- vfree(buf);
return 0;
fail:
ubi_err("paranoid check failed for PEB %d", pnum);
dbg_msg("hex dump of the %d-%d region", offset, offset + len);
- ubi_dbg_hexdump(buf, len);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
+ ubi->dbg_peb_buf, len, 1);
err = 1;
error:
ubi_dbg_dump_stack();
- vfree(buf);
+ mutex_unlock(&ubi->dbg_buf_mutex);
return err;
}
projects / linux-2.6 / blobdiff