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mailbox: mailbox-test: Fix debugfs_create_dir error checking 

The debugfs_create_dir() function returns ERR_PTR() on error, not NULL.
The current null-check fails to catch errors.

Use IS_ERR() to correctly check for errors.

Fixes: 8ea4484d0c ("mailbox: Add generic mechanism for testing Mailbox Controllers")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
This commit is contained in:
Haotian Zhang 2025-11-20 10:40:39 +08:00 committed by Jassi Brar
parent 060e4e835f
commit 3acf1028f5
1 changed files with 1 additions and 1 deletions
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2
drivers/mailbox/mailbox-test.c
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@ -268,7 +268,7 @@ static int mbox_test_add_debugfs(struct platform_device *pdev,
return 0;
tdev->root_debugfs_dir = debugfs_create_dir(dev_name(&pdev->dev), NULL);
if (!tdev->root_debugfs_dir) {
if (IS_ERR(tdev->root_debugfs_dir)) {
dev_err(&pdev->dev, "Failed to create Mailbox debugfs\n");
return -EINVAL;
}