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| author | Philip Rakity <prakity@yahoo.com> | 2013-04-04 20:18:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 20:08:25 -0700 |
| commit | da52815aeca48bfc954672fc66e5bcad2fbc99bd (patch) | |
| tree | 4d3b6f008f0dee2044baaa62701a6a5844df4d9c | |
| parent | 13dd76b5d440ea98cffca49b530a94034ade9254 (diff) | |
| download | kernel-common-da52815aeca48bfc954672fc66e5bcad2fbc99bd.tar.gz kernel-common-da52815aeca48bfc954672fc66e5bcad2fbc99bd.tar.bz2 kernel-common-da52815aeca48bfc954672fc66e5bcad2fbc99bd.zip | |
mmc: core: Fix bit width test failing on old eMMC cards
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@gmail.com>
Signed-off-by: Philip Rakity <prakity@yahoo.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mmc/core/mmc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 089e8ea34812..2743b7d3309d 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -368,13 +368,13 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 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)) { hc_erase_grp_sz = |