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authorKOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>2013-07-07 07:35:45 +0900
committerBen Hutchings <ben@decadent.org.uk>2014-01-03 04:33:36 +0000
commit295efae476b7941e55a0d46ad4f1044d7f7ecbe0 (patch)
tree66a96b44e4a0144364b13f350077f8c5debbfcf5 /drivers/net/irda
parent969a08e9048ddd0d655a19e692673cdb95116ce6 (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 'drivers/net/irda')
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