rpmsg: qcom_smd: Fix irq_of_parse_and_map() return value

[ 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@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220422105326.78713-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 8da1b5c..775a7e4 100644 (file)
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1404,7 +1404,7 @@ static int qcom_smd_parse_edge(struct device *dev,
                edge->name = node->name;
 
        irq = irq_of_parse_and_map(node, 0);
-       if (irq < 0) {
+       if (!irq) {
                dev_err(dev, "required smd interrupt missing\n");
                ret = irq;
                goto put_node;