diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2011-06-21 14:41:48 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-07-20 21:21:01 (GMT) |
| commit | d25928d1eed06a9c23c723466dfa7cbee0a5e07d (patch) | |
| tree | 215f16acf976b8d7df725be06c3f52d6f6da2c9e /drivers/message | |
| parent | e312eb1e66e4357000e4e7438849d5a5fd738219 (diff) | |
| download | linux-fsl-qoriq-d25928d1eed06a9c23c723466dfa7cbee0a5e07d.tar.xz | |
mmc: sdhci: fix interrupt storm from card detection
The issue was initially found by Eric Benard as below.
http://permalink.gmane.org/gmane.linux.ports.arm.kernel/108031
Not sure about other SDHCI based controller, but on Freescale eSDHC,
the SDHCI_INT_CARD_INSERT bits will be immediately set again when it
gets cleared, if a card is inserted. The driver need to mask the irq
to prevent interrupt storm which will freeze the system. And the
SDHCI_INT_CARD_REMOVE gets the same situation.
The patch fixes the problem based on the initial idea from
Eric Benard.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Eric Benard <eric@eukrea.com>
Tested-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/message')
0 files changed, 0 insertions, 0 deletions