This is a note to let you know that I've just added the patch titled
mmc: core: Fix bit width test failing on old eMMC cards
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-core-fix-bit-width-test-failing-on-old-emmc-cards.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 836dc2fe89c968c10cada87e0dfae6626f8f9da3 Mon Sep 17 00:00:00 2001
From: Philip Rakity <prakity@xxxxxxxxx>
Date: Thu, 4 Apr 2013 20:18:11 +0100
Subject: mmc: core: Fix bit width test failing on old eMMC cards
From: Philip Rakity <prakity@xxxxxxxxx>
commit 836dc2fe89c968c10cada87e0dfae6626f8f9da3 upstream.
PARTITION_SUPPORT needs to be set before doing the compare on version
number so the bit width test does not get invalid data. Before this
patch, a Sandisk iNAND eMMC card would detect 1-bit width although
the hardware supports 4-bit.
Only affects old emmc devices - pre 4.4 devices.
Reported-by: Elad Yi <elad.yi@xxxxxxxxx>
Signed-off-by: Philip Rakity <prakity@xxxxxxxxx>
Signed-off-by: Chris Ball <cjb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/mmc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -353,13 +353,13 @@ static int mmc_read_ext_csd(struct mmc_c
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
+ card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
- card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
u8 hc_erase_grp_sz =
Patches currently in stable-queue which might be from prakity@xxxxxxxxx are
queue-3.0/mmc-core-fix-bit-width-test-failing-on-old-emmc-cards.patch
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