[PATCH 5.4 056/408] EDAC/aspeed: Fix handling of platform_get_irq() error

[Greg Kroah-Hartman]

From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

[ Upstream commit afce6996943be265fa39240b67025cfcb1bcdfb1 ]

platform_get_irq() returns a negative error number on error. In such a
case, comparison to 0 would pass the check therefore check the return
value properly, whether it is negative.

 [ bp: Massage commit message. ]

Fixes: 9b7e6242ee4e ("EDAC, aspeed: Add an Aspeed AST2500 EDAC driver")
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Reviewed-by: Stefan Schaeckeler <schaecsn@xxxxxxx>
Link: https://lkml.kernel.org/r/20200827070743.26628-1-krzk@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/edac/aspeed_edac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/edac/aspeed_edac.c b/drivers/edac/aspeed_edac.c
index 5634437bb39d2..66669f9d690be 100644
--- a/drivers/edac/aspeed_edac.c
+++ b/drivers/edac/aspeed_edac.c
@@ -209,8 +209,8 @@ static int config_irq(void *ctx, struct platform_device *pdev)
 	/* register interrupt handler */
 	irq = platform_get_irq(pdev, 0);
 	dev_dbg(&pdev->dev, "got irq %d\n", irq);
-	if (!irq)
-		return -ENODEV;
+	if (irq < 0)
+		return irq;
 
 	rc = devm_request_irq(&pdev->dev, irq, mcr_isr, IRQF_TRIGGER_HIGH,
 			      DRV_NAME, ctx);
-- 
2.25.1