[PATCH 3/6] ALSA: info: Return -ENODEV instead of -EFAULT in alloc_info_private()

[phucduc . bui]

From: bui duc phuc <phucduc.bui@xxxxxxxxx>

When try_module_get() fails in alloc_info_private(), the owning module is
going away and the device is no longer usable, so -EFAULT ("bad address")
is the wrong error. Return -ENODEV, matching the other -ENODEV path in the
same function.
This changes the errno reported to userspace on this rare race.
No other behaviour changes.

Signed-off-by: bui duc phuc <phucduc.bui@xxxxxxxxx>
---
 sound/core/info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/core/info.c b/sound/core/info.c
index 54834dbe6b59..3b8ccda04e1a 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -78,7 +78,7 @@ static int alloc_info_private(struct snd_info_entry *entry,
 	if (!entry || !entry->p)
 		return -ENODEV;
 	if (!try_module_get(entry->module))
-		return -EFAULT;
+		return -ENODEV;
 	data = kzalloc_obj(*data);
 	if (!data) {
 		module_put(entry->module);
-- 
2.43.0