Hello!
On 4/18/23 12:07 PM, Li Yang wrote:
> Smatch reports:
> drivers/usb/phy/phy-tahvo.c: tahvo_usb_probe()
> warn: missing unwind goto?
>
> After geting irq, if ret < 0, it will return without error handling to
> free memory.
> Just add error handling to fix this problem.
Oops, I'm sorry for missing that one...
> Fixes: 0d45a1373e66 ("usb: phy: tahvo: add IRQ check")
> Signed-off-by: Li Yang <lidaxian@xxxxxxxxxxx>
> Reviewed-by: Dongliang Mu <dzm91@xxxxxxxxxxx>
> ---
> The issue is found by static analysis, and the patch remains untest.
> ---
> drivers/usb/phy/phy-tahvo.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c
> index f2d2cc586c5b..184a5f3d7473 100644
> --- a/drivers/usb/phy/phy-tahvo.c
> +++ b/drivers/usb/phy/phy-tahvo.c
> @@ -390,8 +390,11 @@ static int tahvo_usb_probe(struct platform_device *pdev)
> dev_set_drvdata(&pdev->dev, tu);
>
> tu->irq = ret = platform_get_irq(pdev, 0);
> - if (ret < 0)
> - return ret;
> + if (ret < 0) {
> + dev_err(&pdev->dev, "could not get irq: %d\n",
> + ret);
Adding the error message needs another patch, strictly speaking...
> + goto err_remove_phy;
> + }
> ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt,
> IRQF_ONESHOT,
> "tahvo-vbus", tu);
MBR, Sergey
