From: Krzysztof Kozlowski krzk@kernel.org
[ Upstream commit 558e4c36ec9f2722af4fe8ef84dc812bcdb5c43a ]
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 krzk@kernel.org Signed-off-by: Jassi Brar jaswinder.singh@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 484d4438cd835..5665b6ea8119f 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) {