From 51a7e02bb629498c32915881ed4fb61ef778282a Mon Sep 17 00:00:00 2001 From: Pramod Gurav Date: Thu, 30 Oct 2014 14:51:35 +0530 Subject: [PATCH] mfd: db8500-prcmu: Check return of devm_ioremap for error Error check around return value of devm_ioremap is missing. Add the same to avoid NULL pointer dereference. Signed-off-by: Pramod Gurav Acked-by: Linus Walleij Signed-off-by: Lee Jones --- drivers/mfd/db8500-prcmu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 193cf168ba84..89ae8bf665b4 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -3167,6 +3167,11 @@ static int db8500_prcmu_probe(struct platform_device *pdev) } tcdm_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!tcdm_base) { + dev_err(&pdev->dev, + "failed to ioremap prcmu-tcdm register memory\n"); + return -ENOENT; + } /* Clean up the mailbox interrupts after pre-kernel code. */ writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR); -- 2.30.2