ASoC: Check for NULL register bank in snd_soc_get_cache_val()

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
mariux64 · Jun 6, 2011 · fd137e2 · fd137e2
1 parent 6ac3406
commit fd137e2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
@@ -466,6 +466,9 @@ static bool snd_soc_set_cache_val(void *base, unsigned int idx,
 static unsigned int snd_soc_get_cache_val(const void *base, unsigned int idx,
 		unsigned int word_size)
 {
+	if (!base)
+		return -1;
+
 	switch (word_size) {
 	case 1: {
 		const u8 *cache = base;