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mmc: core: Fixed bug in one erase-group budget TRIM

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When requesting a trim for several bytes, everything up to the next
erase-group is erased. This causes data corruption.

Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Robin van der Gracht 2015-08-04 08:58:33 +02:00 committed by Ulf Hansson
parent 0df9d2eae5
commit 22d7e85ff8
1 changed files with 2 additions and 3 deletions
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5
drivers/mmc/core/core.c
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@ -2227,9 +2227,8 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
* and call mmc_do_erase() twice if necessary. This special case is
* identified by the card->eg_boundary flag.
*/
if ((arg & MMC_TRIM_ARGS) && (card->eg_boundary) &&
(from % card->erase_size)) {
rem = card->erase_size - (from % card->erase_size);
rem = card->erase_size - (from % card->erase_size);
if ((arg & MMC_TRIM_ARGS) && (card->eg_boundary) && (nr > rem)) {
err = mmc_do_erase(card, from, from + rem - 1, arg);
from += rem;
if ((err) || (to <= from))