On Mon, Nov 24, 2014 at 01:46:56PM +0300, Dan Carpenter wrote:
> Hello Dinh Nguyen,
>
> The patch 8d736d8a9c44: "usb: dwc2: gadget: Do not fail probe if
> there isn't a clock node" from Nov 11, 2014, leads to the following
> static checker warning:
>
> drivers/usb/dwc2/gadget.c:3436 dwc2_gadget_init()
> warn: passing zero to 'PTR_ERR'
>
> drivers/usb/dwc2/gadget.c
> 3432 hsotg->clk = devm_clk_get(dev, "otg");
> 3433 if (IS_ERR(hsotg->clk)) {
> 3434 hsotg->clk = NULL;
>
> You need to preserve the error code. NULL means zero means success.
>
Oh, wait. You are returning success deliberately? Just "return 0;"
in that case instead of obfuscating it this way. But shouldn't we
continue with the rest of the function anyway? This patch is confusing
to me.
> 3435 dev_err(dev, "cannot get otg clock\n");
Do we need to print this error if it's a success path?
What?
regards,
dan carpenter
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