diff mbox series

mailbox: th1520: Fix a NULL vs IS_ERR() bug

Message ID bda05d7b-5a6e-4f57-a124-ba56f51da031@stanley.mountain (mailing list archive)
State New
Headers show
Series mailbox: th1520: Fix a NULL vs IS_ERR() bug | expand

Checks

Context Check Description
conchuod/vmtest-fixes-PR fail merge-conflict

Commit Message

Dan Carpenter Nov. 30, 2024, 10:07 a.m. UTC
The devm_ioremap() function doesn't return error pointers, it returns
NULL.  Update the error checking to match.

Fixes: 5d4d263e1c6b ("mailbox: Introduce support for T-head TH1520 Mailbox driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/mailbox/mailbox-th1520.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/mailbox/mailbox-th1520.c b/drivers/mailbox/mailbox-th1520.c
index 4e84640ac3b8..e16e7c85ee3c 100644
--- a/drivers/mailbox/mailbox-th1520.c
+++ b/drivers/mailbox/mailbox-th1520.c
@@ -387,8 +387,10 @@  static void __iomem *th1520_map_mmio(struct platform_device *pdev,
 
 	mapped = devm_ioremap(&pdev->dev, res->start + offset,
 			      resource_size(res) - offset);
-	if (IS_ERR(mapped))
+	if (!mapped) {
 		dev_err(&pdev->dev, "Failed to map resource: %s\n", res_name);
+		return ERR_PTR(-ENOMEM);
+	}
 
 	return mapped;
 }