If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
the driver blithely passes it to ata_host_activate() that treats IRQ0 as
a sign that libata should use polling and thus complains about non-NULL
IRQ handler passed to it. Deny IRQ0 right away, returning -EINVAL from
the probe() method...
Fixes: 76a40ca82f34 ("Add Palmchip BK3710 PATA controller driver.")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxxxxxxxx>
---
drivers/ata/pata_bk3710.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-block/drivers/ata/pata_bk3710.c
===================================================================
--- linux-block.orig/drivers/ata/pata_bk3710.c
+++ linux-block/drivers/ata/pata_bk3710.c
@@ -317,6 +317,8 @@ static int __init pata_bk3710_probe(stru
pr_err(DRV_NAME ": failed to get IRQ resource\n");
return irq;
}
+ if (!irq)
+ return -EINVAL;
base = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(base))
