[alsa-devel] [PATCH 02/43] ALSA: control: Warn if too long string is passed to snd_ctl_enum_info()

[Takashi Iwai]

This allows us to catch the bugs in drivers easily.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/core/control.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/core/control.c b/sound/core/control.c
index b9611344ff9e..f95df84437e1 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1747,6 +1747,9 @@ int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels,
 	info->value.enumerated.items = items;
 	if (info->value.enumerated.item >= items)
 		info->value.enumerated.item = items - 1;
+	WARN(strlen(names[info->value.enumerated.item]) >= sizeof(info->value.enumerated.name),
+	     "ALSA: too long item name '%s'\n",
+	     names[info->value.enumerated.item]);
 	strlcpy(info->value.enumerated.name,
 		names[info->value.enumerated.item],
 		sizeof(info->value.enumerated.name));
-- 
2.1.2