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| author | KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp> | 2013-07-06 22:35:45 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-08-25 02:13:22 (GMT) |
| commit | c8760069627ad3b0dbbea170f0c4c58b16e18d3d (patch) | |
| tree | ab3a9514d1ce33fd66bef9dad85b6a82e61217f9 /drivers/mmc/host | |
| parent | 2af502ca640969e335c02be3834b86c5b58be591 (diff) | |
| download | linux-fsl-qoriq-c8760069627ad3b0dbbea170f0c4c58b16e18d3d.tar.xz | |
mmc: block: fix a bug of error handling in MMC driver
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.
Signed-off-by: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host')
0 files changed, 0 insertions, 0 deletions