This is a note to let you know that I've just added the patch titled
opp: Fix error check in dev_pm_opp_attach_genpd()
to the 5.18-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-check-in-dev_pm_opp_attach_genpd.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c7b00b515419f98cc32abd5d3dd3a081465afafe
Author: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx>
Date: Tue May 24 20:31:51 2022 +0800
opp: Fix error check in dev_pm_opp_attach_genpd()
[ Upstream commit 4ea9496cbc959eb5c78f3e379199aca9ef4e386b ]
dev_pm_domain_attach_by_name() may return NULL in some cases,
so IS_ERR() doesn't meet the requirements. Thus fix it.
Fixes: 6319aee10e53 ("opp: Attach genpds to devices from within OPP core")
Signed-off-by: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx>
[ Viresh: Replace ENODATA with ENODEV ]
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 740407252298..e154b18ec4b1 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2413,8 +2413,8 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
}
virt_dev = dev_pm_domain_attach_by_name(dev, *name);
- if (IS_ERR(virt_dev)) {
- ret = PTR_ERR(virt_dev);
+ if (IS_ERR_OR_NULL(virt_dev)) {
+ ret = PTR_ERR(virt_dev) ? : -ENODEV;
dev_err(dev, "Couldn't attach to pm_domain: %d\n", ret);
goto err;
}
