On Sat, Nov 24, 2018 at 09:14:16PM +0300, Sergei Shtylyov wrote:
> The driver overrides the error codes returned by platform_get_irq() to
> -EINVAL, so if it returns -EPROBE_DEFER, the driver would fail the probe
> permanently instead of the deferred probing. Switch to propagating the
> error code upstream, still checking/overriding IRQ0 as libata regards it
> as "no IRQ" (thus polling) anyway...
>
> Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
> Signed-off-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>
Reviewed-by: Simon Horman <horms+rene...@verge.net.au>
>
> ---
> This patch is against the 'master' branch of Jens Axboe's 'linux-block.git'
> repo.
>
> drivers/ata/sata_rcar.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> Index: linux-block/drivers/ata/sata_rcar.c
> ===================================================================
> --- linux-block.orig/drivers/ata/sata_rcar.c
> +++ linux-block/drivers/ata/sata_rcar.c
> @@ -891,7 +891,9 @@ static int sata_rcar_probe(struct platfo
> int ret = 0;
>
> irq = platform_get_irq(pdev, 0);
> - if (irq <= 0)
> + if (irq < 0)
> + return irq;
> + if (!irq)
> return -EINVAL;
>
> priv = devm_kzalloc(dev, sizeof(struct sata_rcar_priv), GFP_KERNEL);
>
