ASoC: Intel: Skylake: Check list empty while getting module info

Module list can be NULL so check if the list is empty before
accessing the list.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c
index 25fcb796bd86..ddcb52a51854 100644
--- a/sound/soc/intel/skylake/skl-sst-utils.c
+++ b/sound/soc/intel/skylake/skl-sst-utils.c
@@ -123,6 +123,11 @@ int snd_skl_get_module_info(struct skl_sst *ctx, u8 *uuid,
 
         uuid_mod = (uuid_le *)uuid;
 
+        if (list_empty(&ctx->uuid_list)) {
+                dev_err(ctx->dev, "Module list is empty\n");
+                return -EINVAL;
+        }
+
         list_for_each_entry(module, &ctx->uuid_list, list) {
                 if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {
                         dfw_config->module_id = module->id;