[PATCH] HSMMC: mmc_omap_irq: Do not expect cmd/data to be non-nullwhen CC/TC occurs

[Adrian Hunter]

From: Jarkko Lavinen <jarkko.lavinen@xxxxxxxxx>

With spurious interrupt cmd can be null even when we have CC
set in irq status.

Fixes: NB#106295 - prevent potential kernel crash in the MMC driver

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@xxxxxxxxx>
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
drivers/mmc/host/omap_hsmmc.c |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d183be6..0268992 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -490,7 +490,7 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)

	OMAP_HSMMC_WRITE(host->base, STAT, status);

-	if (end_cmd || (status & CC))
+	if (end_cmd || ((status & CC) && host->cmd))
		mmc_omap_cmd_done(host, host->cmd);
	if (end_trans || (status & TC))
		mmc_omap_xfer_done(host, data);
--
1.5.6.3
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