From: KOBAYASHI Yoshitake Date: Sat, 6 Jul 2013 22:35:45 +0000 (+0900) Subject: mmc: block: fix a bug of error handling in MMC driver X-Git-Tag: v3.2.54~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=295efae476b7941e55a0d46ad4f1044d7f7ecbe0;p=pandora-kernel.git 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 Signed-off-by: Chris Ball Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed