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authorPramod Gurav <pramod.gurav@smartplayin.com>2014-10-30 12:21:35 +0300
committerLee Jones <lee.jones@linaro.org>2014-11-25 19:18:49 +0300
commit51a7e02bb629498c32915881ed4fb61ef778282a (patch)
treed645c7de99eb01976e84eeed22f5760658732e08 /drivers/mfd/db8500-prcmu.c
parent1b9b46d05f887aec418b3a5f4f55abf79316fcda (diff)
downloadlinux-51a7e02bb629498c32915881ed4fb61ef778282a.tar.xz
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 <pramod.gurav@smartplayin.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/db8500-prcmu.c')
-rw-r--r--drivers/mfd/db8500-prcmu.c5
1 files changed, 5 insertions, 0 deletions
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);