Commit 203bb5af authored Jul 02, 2013 by Ulf Hansson Committed by Chris Ball Jul 05, 2013

mmc: core: Fixup Oops for SDIO shutdown



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 <ulf.hansson@linaro.org>
Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Reported-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Tested-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

parent 30d025c0

drivers/mmc/core/bus.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -129,6 +129,7 @@ static void mmc_bus_shutdown(struct device *dev)
		struct mmc_host *host = card->host;
		int ret;

		if (dev->driver && drv->shutdown)
		drv->shutdown(card);

		if (host->bus_ops->shutdown) {

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