pata_rb532_cf: fix deferred probing

[ Upstream commit 2d3a62fbae8e5badc2342388f65ab2191c209cc0 ]

The driver overrides the error codes returned by platform_get_irq() to
-ENOENT, 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: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Link: https://lore.kernel.org/r/771ced55-3efb-21f5-f21c-b99920aae611@omprussia.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index c8b6a780a29050775f66ec60bc89773d71677683..76c550e160f6e650b9c604a09845e614fe0f200c 100644 (file)
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -120,10 +120,12 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
        }
 
        irq = platform_get_irq(pdev, 0);
-       if (irq <= 0) {
+       if (irq < 0) {
                dev_err(&pdev->dev, "no IRQ resource found\n");
-               return -ENOENT;
+               return irq;
        }
+       if (!irq)
+               return -EINVAL;
 
        pdata = dev_get_platdata(&pdev->dev);
        if (!pdata) {