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>

diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c
index 25fcb79..ddcb52a 100644 (file)
--- 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;