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| author | Paul Walmsley <paul@pwsan.com> | 2011-10-06 20:50:33 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-27 13:10:57 (GMT) |
| commit | 2bf22b39823c1d173dda31111a4eb2ce36daaf39 (patch) | |
| tree | 54575fedfd2b032c3113b55dea5e2fd5d0c7eb38 /kernel/signal.c | |
| parent | b6ad726e3fe69e1ff3c3b2ad272ba3e4c376cd6a (diff) | |
| download | linux-2bf22b39823c1d173dda31111a4eb2ce36daaf39.tar.xz | |
mmc: core: add workaround for controllers with broken multiblock reads
Due to hardware bugs, some MMC host controllers don't support
multiple-block reads[1]. To resolve, add a new MMC capability flag,
MMC_CAP2_NO_MULTI_READ, which can be set by affected host controller
drivers. When this capability is set, all reads will be issued one
sector at a time.
1. See for example Advisory 2.1.1.128 "MMC: Multiple Block Read
Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
Revision F (October 2010) (SPRZ278F), available from
http://focus.ti.com/lit/er/sprz278f/sprz278f.pdf
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Dave Hylands <dhylands@gmail.com>
Tested-by: Steve Sakoman <sakoman@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'kernel/signal.c')
0 files changed, 0 insertions, 0 deletions