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Message-Id: <20220114061830.13456-1-linmq006@gmail.com>
Date: Fri, 14 Jan 2022 06:18:29 +0000
From: Miaoqian Lin <linmq006@...il.com>
To: Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sagar Dharia <sdharia@...eaurora.org>,
linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
linux-kernel@...r.kernel.org
Cc: linmq006@...il.com
Subject: [PATCH] slimbus: qcom: Fix IRQ check in qcom_slim_probe
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: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
drivers/slimbus/qcom-ctrl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/slimbus/qcom-ctrl.c b/drivers/slimbus/qcom-ctrl.c
index f04b961b96cd..ec58091fc948 100644
--- a/drivers/slimbus/qcom-ctrl.c
+++ b/drivers/slimbus/qcom-ctrl.c
@@ -510,9 +510,9 @@ static int qcom_slim_probe(struct platform_device *pdev)
}
ctrl->irq = platform_get_irq(pdev, 0);
- if (!ctrl->irq) {
+ if (ctrl->irq < 0) {
dev_err(&pdev->dev, "no slimbus IRQ\n");
- return -ENODEV;
+ return ctrl->irq;
}
sctrl = &ctrl->ctrl;
--
2.17.1
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