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mmc: core: Fixup Oops for SDIO shutdown

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Commit "mmc: core: Handle card shutdown from mmc_bus" introduced an
Oops in the shutdown sequence for SDIO.

The drv pointer, does not exist for SDIO since the probing of the SDIO
card from the mmc_bus perspective is expected to fail by returning
-ENODEV.

This patch adds the proper check for the pointer before calling it.

Signed-off-by: Ulf Hansson <[email protected]>
Reported-by: Stephen Warren <[email protected]>
Reported-by: Tuomas Tynkkynen <[email protected]>
Tested-by: Tuomas Tynkkynen <[email protected]>
Acked-by: Jaehoon Chung <[email protected]>
Signed-off-by: Chris Ball <[email protected]>
This commit is contained in:
Ulf Hansson 2013-07-02 12:53:01 +02:00 • committed by Chris Ball
commit 203bb5af65
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/core/bus.c
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@ -129,7 +129,8 @@ static void mmc_bus_shutdown(struct device *dev)
struct mmc_host *host = card->host;
int ret;
drv->shutdown(card);
if (dev->driver && drv->shutdown)
drv->shutdown(card);
if (host->bus_ops->shutdown) {
ret = host->bus_ops->shutdown(host);