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authorMark Lord <lkml@rtr.ca>2007-03-06 13:30:13 +0100
committerPierre Ossman <drzeus@drzeus.cx>2007-03-06 13:30:13 +0100
commit62df67a523acd7a22d936bf946b1889dbd60ca98 (patch)
tree74f915f9a1c716d2efdb55bdf485df4b145e1a2e /drivers/mmc
parentcd9277c011a99769fa371521b460ed57f6d280b1 (diff)
downloadop-kernel-dev-62df67a523acd7a22d936bf946b1889dbd60ca98.zip
op-kernel-dev-62df67a523acd7a22d936bf946b1889dbd60ca98.tar.gz
sdhci: make isr tolerant of read errors
The interrupt is shared with another device, which resumes earlier than the sdhci controller, and generates an interrupt. The sdhci interrupt handler runs, sees 0xffffffff in its own device's interrupt status, and tries to handle it.. The reason for the 0xffffffff is that the device is still suspended, and *all* regs are reading back 0xffffffff. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/sdhci.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index c52b167..f3260ec 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -993,7 +993,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
- if (!intmask) {
+ if (!intmask || intmask == 0xffffffff) {
result = IRQ_NONE;
goto out;
}
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