This is a note to let you know that I've just added the patch titled
OPP: debugfs: Fix warning around icc_get_name()
to the 6.1-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-debugfs-fix-warning-around-icc_get_name.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 476a7eaf105a46d6a7fa9a0757e09c2efa59a2e7
Author: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Date: Mon Mar 4 16:48:28 2024 +0530
OPP: debugfs: Fix warning around icc_get_name()
[ Upstream commit 28330ceb953e39880ea77da4895bb902a1244860 ]
If the kernel isn't built with interconnect support, icc_get_name()
returns NULL and we get following warning:
drivers/opp/debugfs.c: In function 'bw_name_read':
drivers/opp/debugfs.c:43:42: error: '%.62s' directive argument is null [-Werror=format-overflow=]
i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path));
Fix it.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202402141313.81ltVF5g-lkp@xxxxxxxxx/
Fixes: 0430b1d5704b0 ("opp: Expose bandwidth information via debugfs")
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Reviewed-by: Dhruva Gole <d-gole@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c
index 2c7fb683441ef..de81bbf4be100 100644
--- a/drivers/opp/debugfs.c
+++ b/drivers/opp/debugfs.c
@@ -37,10 +37,12 @@ static ssize_t bw_name_read(struct file *fp, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct icc_path *path = fp->private_data;
+ const char *name = icc_get_name(path);
char buf[64];
- int i;
+ int i = 0;
- i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path));
+ if (name)
+ i = scnprintf(buf, sizeof(buf), "%.62s\n", name);
return simple_read_from_buffer(userbuf, count, ppos, buf, i);
}
