[PATCH] PCI: j721e: In j721e_pcie_suspend_noirq() check reset_gpio before to use it

[Siddharth Vadapalli]

On Mon, Dec 09, 2024 at 12:23:21PM +0100, Thomas Richard wrote:
> The reset_gpio is optional, so in j721e_pcie_suspend_noirq() check if it is
> not NULL before to use it.
> 
> Fixes: c538d40f365b ("PCI: j721e: Add suspend and resume support")
> Signed-off-by: Thomas Richard <thomas.richard at bootlin.com>

Reviewed-by: Siddharth Vadapalli <s-vadapalli at ti.com>

> ---
>  drivers/pci/controller/cadence/pci-j721e.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
> index 0341d51d6aed..5bc14dd70811 100644
> --- a/drivers/pci/controller/cadence/pci-j721e.c
> +++ b/drivers/pci/controller/cadence/pci-j721e.c
> @@ -644,7 +644,9 @@ static int j721e_pcie_suspend_noirq(struct device *dev)
>  	struct j721e_pcie *pcie = dev_get_drvdata(dev);
>  
>  	if (pcie->mode == PCI_MODE_RC) {
> -		gpiod_set_value_cansleep(pcie->reset_gpio, 0);
> +		if (pcie->reset_gpio)
> +			gpiod_set_value_cansleep(pcie->reset_gpio, 0);
> +
>  		clk_disable_unprepare(pcie->refclk);
>  	}
>  

Regards,
Siddharth.