mailbox: mailbox-test: Fix debugfs_create_dir error checking
authorHaotian Zhang <vulab@iscas.ac.cn>
Thu, 20 Nov 2025 02:40:39 +0000 (10:40 +0800)
committerJassi Brar <jassisinghbrar@gmail.com>
Fri, 28 Nov 2025 15:31:52 +0000 (09:31 -0600)
commit3acf1028f5003731977f750a7070f3321a9cb740
treeee621fe6c53cfed3ab0b3eeb777f9cfbef79ab85
parent060e4e835f9394816584942511f22d771f05100c
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: 8ea4484d0c2b ("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>
drivers/mailbox/mailbox-test.c