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authorAndres Salomon2008-07-04 10:00:04 -0700
committerLinus Torvalds2008-07-04 10:40:09 -0700
commit603ded16a308d0a7a17738c973e3c8cbcd5db7dd (patch)
tree580c111f2d8dceb6d97a261302f48521ff140254 /ipc
parente08c1694d9e2138204f2b79b73f0f159074ce2f5 (diff)
olpc: sdhci: add quirk for the Marvell CaFe's interrupt timeout
The CaFe chip has a hardware bug that ends up with us getting a timeout value that's too small, causing the following sorts of problems: [ 60.525138] mmcblk0: error -110 transferring data [ 60.531477] end_request: I/O error, dev mmcblk0, sector 1484353 [ 60.533371] Buffer I/O error on device mmcblk0p2, logical block 181632 [ 60.533371] lost page write due to I/O error on mmcblk0p2 Presumably this is an off-by-one error in the hardware. Incrementing the timeout count value that we stuff into the TIMEOUT_CONTROL register gets us a value that works. This bug was originally discovered by Pierre Ossman, I believe. [thanks to Robert Millan for proving that this was still a problem] Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Pierre Ossman <drzeus-list@drzeus.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
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