Commit dac0670d authored Apr 01, 2016 by Venkat Gopalakrishnan

mmc: core: Add NULL check for host->card



Make sure the card is present before enabling/disabling clock scaling,
to prevent NULL pointer access.

Change-Id: I1d683c4202ce34edeb6cb36d9713e226bb6f43d7
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>

parent 64ac3318

drivers/mmc/core/host.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -563,7 +563,7 @@ static ssize_t store_enable(struct device *dev,
		struct mmc_host *host = cls_dev_to_mmc_host(dev);
		unsigned long value;

		if (!host \|\| kstrtoul(buf, 0, &value))
		if (!host \|\| !host->card \|\| kstrtoul(buf, 0, &value))
		return -EINVAL;

		mmc_get_card(host->card);