On 01/30/2017 05:48 AM, Shailendra Verma wrote:
> of_match_device could return NULL, and so can cause a NULL
> pointer dereference later.
>
> Signed-off-by: Shailendra Verma <shailendra.v@xxxxxxxxxxx>
> ---
> drivers/mmc/host/mxs-mmc.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 44ecebd..d12a5b7 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -581,6 +581,11 @@ static int mxs_mmc_probe(struct platform_device *pdev)
> struct regulator *reg_vmmc;
> struct mxs_ssp *ssp;
>
> + if (!of_id) {
> + dev_err(&pdev->dev, "Error: No device match found\n");
> + return -ENODEV;
> + }
The probe won't be called if OF match doesn't happen in the first place,
so this check is redundant, no ?
> irq_err = platform_get_irq(pdev, 0);
> if (irq_err < 0)
> return irq_err;
>
--
Best regards,
Marek Vasut
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