4.20-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 9f83cfdb1ace3ef268ecc6fda50058d2ec37d603 ]
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") Reviewed-by: Simon Horman horms+renesas@verge.net.au Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Sergei Shtylyov sergei.shtylyov@cogentembedded.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ata/sata_rcar.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 4b1ff5bc256a..59b2317acea9 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -891,7 +891,9 @@ static int sata_rcar_probe(struct platform_device *pdev) 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);