diff options
| author | Gabriel Krisman Bertazi <krisman@collabora.co.uk> | 2017-01-16 12:23:42 -0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-01-31 11:26:49 +0100 |
| commit | 161e6d44a5e2d3f85365cb717d60e363171b39e6 (patch) | |
| tree | 5c8b730a137696ef979f05ceae869b6e0348794c /drivers/usb/host/fhci-tds.c | |
| parent | 566cf877a1fcb6d6dc0126b076aad062054c2637 (diff) | |
mmc: sdhci: Ignore unexpected CARD_INT interrupts
One of our kernelCI boxes hanged at boot because a faulty eSDHC device
was triggering spurious CARD_INT interrupts for SD cards, causing CMD52
reads, which are not allowed for SD devices. This adds a sanity check
to the interruption path, preventing that illegal command from getting
sent if the CARD_INT interruption should be disabled.
This quirk allows that particular machine to resume boot despite the
faulty hardware, instead of getting hung dealing with thousands of
mishandled interrupts.
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'drivers/usb/host/fhci-tds.c')