diff options
| author | KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp> | 2013-07-07 07:35:45 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-01-03 04:33:36 +0000 |
| commit | 295efae476b7941e55a0d46ad4f1044d7f7ecbe0 (patch) | |
| tree | 66a96b44e4a0144364b13f350077f8c5debbfcf5 /mm/shmem.c | |
| parent | 969a08e9048ddd0d655a19e692673cdb95116ce6 (diff) | |
mmc: block: fix a bug of error handling in MMC driver
commit c8760069627ad3b0dbbea170f0c4c58b16e18d3d upstream.
Current MMC driver doesn't handle generic error (bit19 of device
status) in write sequence. As a result, write data gets lost when
generic error occurs. For example, a generic error when updating a
filesystem management information causes a loss of write data and
corrupts the filesystem. In the worst case, the system will never
boot.
This patch includes the following functionality:
1. To enable error checking for the response of CMD12 and CMD13
in write command sequence
2. To retry write sequence when a generic error occurs
Messages are added for v2 to show what occurs.
[Backported to 3.4-stable]
Signed-off-by: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions