This is a note to let you know that I've just added the patch titled OPP: fix error checking in opp_migrate_dentry() to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: opp-fix-error-checking-in-opp_migrate_dentry.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e27394c04861d2be31a5b7d0051d25d7e72f97b4 Author: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> Date: Wed Feb 8 12:00:37 2023 +0800 OPP: fix error checking in opp_migrate_dentry() [ Upstream commit eca4c0eea53432ec4b711b2a8ad282cbad231b4f ] Since commit ff9fb72bc077 ("debugfs: return error values, not NULL") changed return value of debugfs_rename() in error cases from %NULL to %ERR_PTR(-ERROR), we should also check error values instead of NULL. Fixes: ff9fb72bc077 ("debugfs: return error values, not NULL") Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c index b5f2f9f393926..9eb71f47487b2 100644 --- a/drivers/opp/debugfs.c +++ b/drivers/opp/debugfs.c @@ -209,7 +209,7 @@ static void opp_migrate_dentry(struct opp_device *opp_dev, dentry = debugfs_rename(rootdir, opp_dev->dentry, rootdir, opp_table->dentry_name); - if (!dentry) { + if (IS_ERR(dentry)) { dev_err(dev, "%s: Failed to rename link from: %s to %s\n", __func__, dev_name(opp_dev->dev), dev_name(dev)); return;