Re: pci-exynos.c coverity issue #1437287

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On Tue, Oct 27, 2020 at 11:34:46AM -0500, Bjorn Helgaas wrote:
> Hi Jingoo,
> 
> Please take a look at this issue reported by Coverity:
> 
> 222 static void exynos_pcie_assert_reset(struct exynos_pcie *ep)
> 223 {
> 224        struct dw_pcie *pci = ep->pci;
> 225        struct device *dev = pci->dev;
> 226
>    	1. Condition ep->reset_gpio >= 0, taking true branch.
> 227        if (ep->reset_gpio >= 0)
> 
> CID 1437287 (#1 of 1): Unchecked return value (CHECKED_RETURN) 2.
> check_return: Calling devm_gpio_request_one without checking return
> value (as is done elsewhere 112 out of 113 times).
> 
> 228                devm_gpio_request_one(dev, ep->reset_gpio,
> 229                                GPIOF_OUT_INIT_HIGH, "RESET");
> 
> 
> Maybe you can guarantee that it's safe to ignore the return value by
> doing a lot of code analysis, but I think it would be better to check
> like all the other callers do.

+Cc Marek,

Hi Bjorn,

I think this is being removed by Marek's patchset:
https://lore.kernel.org/linux-samsung-soc/20201023075744.26200-1-m.szyprowski@xxxxxxxxxxx/

Best regards,
Krzysztof




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