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mfd: db8500-prcmu: Check return of devm_ioremap for error

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Error check around return value of devm_ioremap is missing. Add the same
to avoid NULL pointer dereference.

Signed-off-by: Pramod Gurav <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
This commit is contained in:
Pramod Gurav 2014-10-30 14:51:35 +05:30 • committed by Lee Jones
commit 51a7e02bb6
1 changed files with 5 additions and 0 deletions
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5
drivers/mfd/db8500-prcmu.c
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@ -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);