Commit 4a835afd authored by Wen Zhiwei's avatar Wen Zhiwei Committed by Ulf Hansson
Browse files

mmc: dw_mmc: Fix potential null pointer risk 



we previously assumed 'host->slot' could be null,
null pointer judgment should be added

Signed-off-by: default avatarWen Zhiwei <wenzhiwei@kylinos.cn>
Reviewed-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Link: https://lore.kernel.org/r/20211229023814.53372-1-wenzhiwei@kylinos.cn


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 7e57714c

drivers/mmc/host/dw_mmc.c

+1 −1
Original line number Diff line number Diff line
@@ -3568,7 +3568,7 @@ int dw_mci_runtime_resume(struct device *dev) 
	mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);





	if (host->slot->mmc->pm_flags & MMC_PM_KEEP_POWER)

	if (host->slot && host->slot->mmc->pm_flags & MMC_PM_KEEP_POWER)

		dw_mci_set_ios(host->slot->mmc, &host->slot->mmc->ios);



	/* Force setup bus to guarantee available clock output */