EDAC/aspeed: Fix handling of platform_get_irq() error

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@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Stefan Schaeckeler <schaecsn@gmx.net>
Link: https://lkml.kernel.org/r/20200827070743.26628-1-krzk@kernel.org

diff --git a/drivers/edac/aspeed_edac.c b/drivers/edac/aspeed_edac.c
index b194658..fbec28d 100644 (file)
--- 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);