From 22d7e85ff8e5826845e9a4fa34b4723e5a97ee9b Mon Sep 17 00:00:00 2001 From: Robin van der Gracht Date: Tue, 4 Aug 2015 08:58:33 +0200 Subject: mmc: core: Fixed bug in one erase-group budget TRIM 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 Signed-off-by: Ulf Hansson --- drivers/mmc/core/core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/mmc') diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 083cade3ffc5..57edb2a9bb04 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -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)) -- cgit v1.2.3