platform_get_irq() returns -ERRNO on error. In such case casting to u32
and comparing to 0 would pass the check.
Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver")
Signed-off-by: Krzysztof Kozlowski <k...@kernel.org>
---
Changes since v2:
1. Fix subject.
Changes since v1:
1. Correct u32->int,
2. Fix left-over '!'.
---
drivers/mailbox/mtk-cmdq-mailbox.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c
b/drivers/mailbox/mtk-cmdq-mailbox.c
index 484d4438cd83..5665b6ea8119 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -69,7 +69,7 @@ struct cmdq_task {
struct cmdq {
struct mbox_controller mbox;
void __iomem *base;
- u32 irq;
+ int irq;
u32 thread_nr;
u32 irq_mask;
struct cmdq_thread *thread;
@@ -525,10 +525,8 @@ static int cmdq_probe(struct platform_device *pdev)
}
cmdq->irq = platform_get_irq(pdev, 0);
- if (!cmdq->irq) {
- dev_err(dev, "failed to get irq\n");
- return -EINVAL;
- }
+ if (cmdq->irq < 0)
+ return cmdq->irq;
plat_data = (struct gce_plat *)of_device_get_match_data(dev);
if (!plat_data) {
--
2.17.1
