From: Johan Kristell <johan.kristell@xxxxxxxx>
This patch fixes a bug in the multiblock write tests where the written
data is read back for verifying one block at a time. The tests in
mmc_test assumes that all cards are byte addressable.
This will cause the multi block write tests to fail, leading the user of
the mmc_test driver thinking there is something wrong with the sdhci
driver they are testing.
The start address for the block is calculated as: blocknum * 512. For
block addressable cards the blocknum alone should be used.
Signed-off-by: Johan Kristell <johan.kristell@xxxxxxxx>
Cc: <linux-mmc@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
backported from mainline commit
c286d03cce118e9fb8dda8da43f9131c169c5a75
Fixes: NB#164938 - Misaligned in-kernel MMC transfer hangs task
---
drivers/mmc/card/mmc_test.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index b9f1e84..e7f8027 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -74,6 +74,9 @@ static void mmc_test_prepare_mrq(struct mmc_test_card *test,
}
mrq->cmd->arg = dev_addr;
+ if (!mmc_card_blockaddr(test->card))
+ mrq->cmd->arg <<= 9;
+
mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
if (blocks == 1)
@@ -190,7 +193,7 @@ static int __mmc_test_prepare(struct mmc_test_card *test, int write)
}
for (i = 0;i < BUFFER_SIZE / 512;i++) {
- ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
+ ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
if (ret)
return ret;
}
@@ -219,7 +222,7 @@ static int mmc_test_cleanup(struct mmc_test_card *test)
memset(test->buffer, 0, 512);
for (i = 0;i < BUFFER_SIZE / 512;i++) {
- ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
+ ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
if (ret)
return ret;
}
@@ -426,7 +429,7 @@ static int mmc_test_transfer(struct mmc_test_card *test,
for (i = 0;i < sectors;i++) {
ret = mmc_test_buffer_transfer(test,
test->buffer + i * 512,
- dev_addr + i * 512, 512, 0);
+ dev_addr + i, 512, 0);
if (ret)
return ret;
}
--
1.6.0.4
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