[PATCH AUTOSEL 5.10 3/9] ASoC: wm_adsp: Let soc_cleanup_component_debugfs remove debugfs

From: Sasha Levin
Date: Mon Aug 16 2021 - 20:37:13 EST


From: Lucas Tanure <tanureal@xxxxxxxxxxxxxxxxxxxxx>

[ Upstream commit acbf58e530416e167c3b323111f4013d9f2b0a7d ]

soc_cleanup_component_debugfs will debugfs_remove_recursive
the component->debugfs_root, so adsp doesn't need to also
remove the same entry.
By doing that adsp also creates a race with core component,
which causes a NULL pointer dereference

Signed-off-by: Lucas Tanure <tanureal@xxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210728104416.636591-1-tanureal@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/codecs/wm_adsp.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 51d95437e0fd..ac3c612ad2f1 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -754,7 +754,6 @@ static void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
static void wm_adsp2_cleanup_debugfs(struct wm_adsp *dsp)
{
wm_adsp_debugfs_clear(dsp);
- debugfs_remove_recursive(dsp->debugfs_root);
}
#else
static inline void wm_adsp2_init_debugfs(struct wm_adsp *dsp,
--
2.30.2