diff options
| author | Krzysztof Kozlowski <krzk@kernel.org> | 2020-08-27 09:31:28 +0200 |
|---|---|---|
| committer | Jassi Brar <jaswinder.singh@linaro.org> | 2020-10-13 04:10:34 +0200 |
| commit | 558e4c36ec9f2722af4fe8ef84dc812bcdb5c43a (patch) | |
| tree | a4c90680ab1344f8f50125d09bc3c10b6fff424a /drivers/mailbox | |
| parent | mailbox: arm_mhu: Add ARM MHU doorbell driver (diff) | |
| download | linux-558e4c36ec9f2722af4fe8ef84dc812bcdb5c43a.tar.xz linux-558e4c36ec9f2722af4fe8ef84dc812bcdb5c43a.zip | |
maiblox: mediatek: Fix handling of platform_get_irq() error
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>
Diffstat (limited to 'drivers/mailbox')
| -rw-r--r-- | drivers/mailbox/mtk-cmdq-mailbox.c | 8 |
1 files 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) { |