6.6-stable review patch. If anyone has any objections, please let me know.
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From: Haotian Zhang vulab@iscas.ac.cn
commit c43bcd2b2aa3c2ca9d2433c3990ecbc2c47d10eb upstream.
In cec_devnode_init(), the debugfs directory created with debugfs_create_dir() is not removed if bus_register() fails. This leaves a stale "cec" entry in debugfs and prevents proper module reloading.
Fix this by removing the debugfs directory in the error path.
Fixes: a56960e8b406 ("[media] cec: add HDMI CEC framework (core)") Cc: stable@vger.kernel.org Signed-off-by: Haotian Zhang vulab@iscas.ac.cn Signed-off-by: Hans Verkuil hverkuil+cisco@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/cec/core/cec-core.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/media/cec/core/cec-core.c +++ b/drivers/media/cec/core/cec-core.c @@ -449,6 +449,7 @@ static int __init cec_devnode_init(void)
ret = bus_register(&cec_bus_type); if (ret < 0) { + debugfs_remove_recursive(top_cec_dir); unregister_chrdev_region(cec_dev_t, CEC_NUM_DEVICES); pr_warn("cec: bus_register failed\n"); return -EIO;