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authorStefan Nilsson XK <stefan.xk.nilsson@stericsson.com>2011-11-03 09:44:12 +0100
committerChris Ball <cjb@laptop.org>2011-12-10 16:18:35 -0500
commit6de5fc9cf7de334912de4cfd2d06eb2d744d2afe (patch)
tree473198b98663f0e84fc69b70f2fca12dad7f9b9c /drivers/mmc/card/block.c
parent7833c66b2d764a3c883c2f5cc60cd8a6266dae15 (diff)
downloadlinux-linaro-stable-6de5fc9cf7de334912de4cfd2d06eb2d744d2afe.tar.gz
mmc: core: Add quirk for long data read time
Adds a quirk that sets the data read timeout to a fixed value instead of relying on the information in the CSD. The timeout value chosen is 300ms since that has proven enough for the problematic cards found, but could be increased if other cards require this. This patch also enables this quirk for certain Micron cards known to have this problem. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/card/block.c')
-rw-r--r--drivers/mmc/card/block.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index a1cb21f95302..1e0e27cbe987 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1606,6 +1606,14 @@ static const struct mmc_fixup blk_fixups[] =
MMC_QUIRK_BLK_NO_CMD23),
MMC_FIXUP("MMC32G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_BLK_NO_CMD23),
+
+ /*
+ * Some Micron MMC cards needs longer data read timeout than
+ * indicated in CSD.
+ */
+ MMC_FIXUP(CID_NAME_ANY, 0x13, 0x200, add_quirk_mmc,
+ MMC_QUIRK_LONG_READ_TIME),
+
END_FIXUP
};