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path: root/drivers/mtd/tests/oobtest.c
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Diffstat (limited to 'drivers/mtd/tests/oobtest.c')
-rw-r--r--drivers/mtd/tests/oobtest.c90
1 files changed, 57 insertions, 33 deletions
diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c
index 5e061186eab1..8e8525f0202f 100644
--- a/drivers/mtd/tests/oobtest.c
+++ b/drivers/mtd/tests/oobtest.c
@@ -70,7 +70,7 @@ static int write_eraseblock(int ebnum)
int i;
struct mtd_oob_ops ops;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
@@ -112,7 +112,10 @@ static int write_whole_device(void)
return err;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ return err;
}
pr_info("written %u eraseblocks\n", i);
return 0;
@@ -141,6 +144,31 @@ static size_t memcmpshow(loff_t addr, const void *cs, const void *ct, size_t cou
return bitflips;
}
+/*
+ * Compare with 0xff and show the address, offset and data bytes at
+ * comparison failure. Return number of bitflips encountered.
+ */
+static size_t memffshow(loff_t addr, loff_t offset, const void *cs,
+ size_t count)
+{
+ const unsigned char *su1;
+ int res;
+ size_t i = 0;
+ size_t bitflips = 0;
+
+ for (su1 = cs; 0 < count; ++su1, count--, i++) {
+ res = *su1 ^ 0xff;
+ if (res) {
+ pr_info("error @addr[0x%lx:0x%lx] 0x%x -> 0xff diff 0x%x\n",
+ (unsigned long)addr, (unsigned long)offset + i,
+ *su1, res);
+ bitflips += hweight8(res);
+ }
+ }
+
+ return bitflips;
+}
+
static int verify_eraseblock(int ebnum)
{
int i;
@@ -203,6 +231,15 @@ static int verify_eraseblock(int ebnum)
bitflips = memcmpshow(addr, readbuf + use_offset,
writebuf + (use_len_max * i) + use_offset,
use_len);
+
+ /* verify pre-offset area for 0xff */
+ bitflips += memffshow(addr, 0, readbuf, use_offset);
+
+ /* verify post-(use_offset + use_len) area for 0xff */
+ k = use_offset + use_len;
+ bitflips += memffshow(addr, k, readbuf + k,
+ mtd->ecclayout->oobavail - k);
+
if (bitflips > bitflip_limit) {
pr_err("error: verify failed at %#llx\n",
(long long)addr);
@@ -212,34 +249,8 @@ static int verify_eraseblock(int ebnum)
return -1;
}
} else if (bitflips) {
- pr_info("ignoring error as within bitflip_limit\n");
+ pr_info("ignoring errors as within bitflip limit\n");
}
-
- for (k = 0; k < use_offset; ++k)
- if (readbuf[k] != 0xff) {
- pr_err("error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- pr_err("error: too "
- "many errors\n");
- return -1;
- }
- }
- for (k = use_offset + use_len;
- k < mtd->ecclayout->oobavail; ++k)
- if (readbuf[k] != 0xff) {
- pr_err("error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- pr_err("error: too "
- "many errors\n");
- return -1;
- }
- }
}
if (vary_offset)
do_vary_offset();
@@ -310,7 +321,10 @@ static int verify_all_eraseblocks(void)
return err;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ return err;
}
pr_info("verified %u eraseblocks\n", i);
return 0;
@@ -421,7 +435,10 @@ static int __init mtd_oobtest_init(void)
goto out;
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);
@@ -634,7 +651,11 @@ static int __init mtd_oobtest_init(void)
goto out;
if (i % 256 == 0)
pr_info("written up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
+
addr += mtd->writesize;
}
}
@@ -672,7 +693,10 @@ static int __init mtd_oobtest_init(void)
}
if (i % 256 == 0)
pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
+
+ err = mtdtest_relax();
+ if (err)
+ goto out;
}
pr_info("verified %u eraseblocks\n", i);