From: Miaoqian Lin linmq006@gmail.com
[ Upstream commit c3d66a164c726cc3b072232d3b6d87575d194084 ]
platform_get_irq() returns negative error number instead 0 on failure. And the doc of platform_get_irq() provides a usage example:
int irq = platform_get_irq(pdev, 0); if (irq < 0) return irq;
Fix the check of return value to catch errors correctly.
Fixes: cdd5de500b2c ("soc: ti: Add wkup_m3_ipc driver") Signed-off-by: Miaoqian Lin linmq006@gmail.com Signed-off-by: Nishanth Menon nm@ti.com Acked-by: Dave Gerlach d-gerlach@ti.com Link: https://lore.kernel.org/r/20220114062840.16620-1-linmq006@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/soc/ti/wkup_m3_ipc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/soc/ti/wkup_m3_ipc.c b/drivers/soc/ti/wkup_m3_ipc.c index fc33bfdc957c..ead96fe2e7f5 100644 --- a/drivers/soc/ti/wkup_m3_ipc.c +++ b/drivers/soc/ti/wkup_m3_ipc.c @@ -405,9 +405,9 @@ static int wkup_m3_ipc_probe(struct platform_device *pdev) }
irq = platform_get_irq(pdev, 0); - if (!irq) { + if (irq < 0) { dev_err(&pdev->dev, "no irq resource\n"); - return -ENXIO; + return irq; }
ret = devm_request_irq(dev, irq, wkup_m3_txev_handler,