linux-kernel - [PATCH 4.9 114/167] rpmsg: qcom_smd: Fix irq_of_parse_and

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Message-Id: <20220613094907.469957691@linuxfoundation.org>
Date:   Mon, 13 Jun 2022 12:09:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 114/167] rpmsg: qcom_smd: Fix irq_of_parse_and_map() return value

From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

[ Upstream commit 1a358d35066487d228a68303d808bc4721c6b1b9 ]

The irq_of_parse_and_map() returns 0 on failure, not a negative ERRNO.

Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Link: https://lore.kernel.org/r/20220422105326.78713-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/rpmsg/qcom_smd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 312cb7fec5b0..5e67e42e6461 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1258,7 +1258,7 @@ static int qcom_smd_parse_edge(struct device *dev,
 	}
 
 	irq = irq_of_parse_and_map(node, 0);
-	if (irq < 0) {
+	if (!irq) {
 		dev_err(dev, "required smd interrupt missing\n");
 		return -EINVAL;
 	}
-- 
2.35.1