On Mon, Jul 02, 2018 at 01:47:08PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> The check to see if platform_get_irq failed is performed on the
> unsigned value of pctrl->irq[i] and the check is never true because
> an unsigned cannot be less than zero. Fix this by assinging the
> signed int ret to the return of platform_get_irq and checking ret
> instead.
>
> Detected by CoverityScan, CID#1470247 ("Unsigned comparison against 0")
>
> Fixes: 6c5d0736e9c0 ("pinctrl: actions: Add interrupt support for OWL S900 SoC")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Thanks!
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Regards,
Mani
> ---
>
> V2: move pctrl->irq[i] = ret assignment below the check on ret, thanks
> to Manivannan Sadhasivam for suggesting this change.
>
> ---
> drivers/pinctrl/actions/pinctrl-owl.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pinctrl/actions/pinctrl-owl.c b/drivers/pinctrl/actions/pinctrl-owl.c
> index 4fa9cc377b3b..24dc57fcac51 100644
> --- a/drivers/pinctrl/actions/pinctrl-owl.c
> +++ b/drivers/pinctrl/actions/pinctrl-owl.c
> @@ -1026,11 +1026,10 @@ int owl_pinctrl_probe(struct platform_device *pdev,
> }
>
> for (i = 0; i < pctrl->num_irq ; i++) {
> - pctrl->irq[i] = platform_get_irq(pdev, i);
> - if (pctrl->irq[i] < 0) {
> - ret = pctrl->irq[i];
> + ret = platform_get_irq(pdev, i);
> + if (ret < 0)
> goto err_exit;
> - }
> + pctrl->irq[i] = ret;
> }
>
> ret = owl_gpio_init(pctrl);
> --
> 2.17.1
>
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