From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, Miaoqian Lin <linmq006@gmail.com>,
stable@vger.kernel.org,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v2 1/2] slimbus: qcom: Fix IRQ check in qcom_slim_probe
Date: Tue, 10 May 2022 10:52:04 +0100 [thread overview]
Message-ID: <20220510095205.337-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20220510095205.337-1-srinivas.kandagatla@linaro.org>
From: Miaoqian Lin <linmq006@gmail.com>
platform_get_irq() returns non-zero IRQ number on success,
negative error number 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.
Cc: stable@vger.kernel.org
Fixes: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
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;
--
2.21.0
next prev parent reply other threads:[~2022-05-10 9:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 9:52 [PATCH v2 0/2] slimbus: patches for 5.19 Srinivas Kandagatla
2022-05-10 9:52 ` Srinivas Kandagatla [this message]
2022-05-10 9:52 ` [PATCH v2 2/2] slimbus: qcom: Remove unnecessary print function dev_err() Srinivas Kandagatla
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