From: Miaoqian Lin <linmq006@gmail.com>
To: Nishanth Menon <nm@ti.com>,
Santosh Shilimkar <ssantosh@kernel.org>,
Dave Gerlach <d-gerlach@ti.com>, Tony Lindgren <tony@atomide.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: linmq006@gmail.com
Subject: [PATCH] soc: ti: wkup_m3_ipc: Fix IRQ check in wkup_m3_ipc_probe
Date: Fri, 14 Jan 2022 06:28:40 +0000 [thread overview]
Message-ID: <20220114062840.16620-1-linmq006@gmail.com> (raw)
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>
---
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 72386bd393fe..2f03ced0f411 100644
--- a/drivers/soc/ti/wkup_m3_ipc.c
+++ b/drivers/soc/ti/wkup_m3_ipc.c
@@ -450,9 +450,9 @@ static int wkup_m3_ipc_probe(struct platform_device *pdev)
return PTR_ERR(m3_ipc->ipc_mem_base);
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,
--
2.17.1
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next reply other threads:[~2022-01-14 6:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 6:28 Miaoqian Lin [this message]
2022-02-02 19:20 ` [PATCH] soc: ti: wkup_m3_ipc: Fix IRQ check in wkup_m3_ipc_probe Dave Gerlach
2022-02-02 19:51 ` Nishanth Menon
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