On Thu, 30 Oct 2014, Pramod Gurav wrote:
> Error check around return value of devm_ioremap is missing. Add the same
> to avoid NULL pointer dereference.
>
> Cc: Linus Walleij <linus.wall...@linaro.org>
> Cc: Samuel Ortiz <sa...@linux.intel.com>
> Cc: Lee Jones <lee.jo...@linaro.org>
> Signed-off-by: Pramod Gurav <pramod.gu...@smartplayin.com>
> ---
> 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 193cf16..89ae8bf 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;
No such file or directory? I think not.
Changed to -ENOMEM and applied with Linus' Ack.
> + }
>
> /* Clean up the mailbox interrupts after pre-kernel code. */
> writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR);
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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