tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

UBUNTU: SAUCE: selftests: gpio: gpio-aggregator: add a test case for _sysfs prefix reservation

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2103496

The kernel doc for gpio-aggregator configfs interface, which was recently
added, states that users should not be able to create an aggregator with a
name prefixed by "_sysfs" via configfs. However, it was found that this
guard does not function as expected (thanks to Dan Carpenter for
identifying and fixing the issue).

Add a test case to verify the guard.

Signed-off-by: Koichiro Den<koichiro.den@canonical.com>
Link:https://lore.kernel.org/r/20250412150119.1461023-1-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski<brgl@bgdev.pl>

(cherry picked from commit 290ffcfe3042dcd5b701a98edd48d7962d35556b gpio/for-next)
Signed-off-by: Koichiro Den<koichiro.den@canonical.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Koichiro Den
2025-04-15 08:14:00 +02:00
committed by Stefan Bader
parent c8a09b8e0c
commit 9a1b21f1eb
1 changed files with 4 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/selftests/gpio/gpio-aggregator.sh
+4
View File
@@ -335,6 +335,10 @@ test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 0 || \
agg_remove_line agg0 line0
agg_remove_chip agg0
echo "1.1.6. Can't instantiate a chip with _sysfs prefix"
mkdir "$CONFIGFS_AGG_DIR/_sysfs" 2> /dev/null && fail "chip _sysfs unexpectedly created"
mkdir "$CONFIGFS_AGG_DIR/_sysfs.foo" 2> /dev/null && fail "chip _sysfs.foo unexpectedly created"
echo "1.2. Creation/deletion via sysfs"
echo "1.2.1. Minimum creation/deletion"