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[01/12] ASoC: Intel: Skylake: Check list empty while getting module info

Message ID 1469536610-27606-2-git-send-email-vinod.koul@intel.com (mailing list archive)
State Accepted
Commit 2392f7fd695246df4fb5f0b5fb88ce37cdb01764
Headers show

Commit Message

Vinod Koul July 26, 2016, 12:36 p.m. UTC 
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>
---
 sound/soc/intel/skylake/skl-sst-utils.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

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;