Re: [patch] [media] st-hva: fix some error handling in hva_hw_probe()

[Jean Christophe TROTIN <jean-christophe.trotin@st.com>]

Thanks,

Acked-by: Jean-Christophe Trotin <jean-christophe.trotin@st.com>

On 10/14/2016 09:32 AM, Dan Carpenter wrote:
> The devm_ioremap_resource() returns error pointers, never NULL.  The
> platform_get_resource() returns NULL on error, never error pointers.
> The error code needs to be set, as well.  The current code returns
> PTR_ERR(NULL) which is success.
>
> Fixes: 57b2c0628b60 ("[media] st-hva: multi-format video encoder V4L2 driver")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/drivers/media/platform/sti/hva/hva-hw.c b/drivers/media/platform/sti/hva/hva-hw.c
> index d341d49..cf2a8d8 100644
> --- a/drivers/media/platform/sti/hva/hva-hw.c
> +++ b/drivers/media/platform/sti/hva/hva-hw.c
> @@ -305,16 +305,16 @@ int hva_hw_probe(struct platform_device *pdev, struct hva_dev *hva)
>  	/* get memory for registers */
>  	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>  	hva->regs = devm_ioremap_resource(dev, regs);
> -	if (IS_ERR_OR_NULL(hva->regs)) {
> +	if (IS_ERR(hva->regs)) {
>  		dev_err(dev, "%s     failed to get regs\n", HVA_PREFIX);
>  		return PTR_ERR(hva->regs);
>  	}
>
>  	/* get memory for esram */
>  	esram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> -	if (IS_ERR_OR_NULL(esram)) {
> +	if (!esram) {
>  		dev_err(dev, "%s     failed to get esram\n", HVA_PREFIX);
> -		return PTR_ERR(esram);
> +		return -ENODEV;
>  	}
>  	hva->esram_addr = esram->start;
>  	hva->esram_size = resource_size(esram);
>