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Subject[PATCH 4.9 110/129] ASoC: Intel: Fix use of potentially uninitialized variable
Date
From: Amadeusz Sławiński <amadeuszx.slawinski@intel.com>

commit 810f3b860850148788fc1ed8a6f5f807199fed65 upstream.

If ipc->ops.reply_msg_match is NULL, we may end up using uninitialized
mask value.

reported by smatch:
sound/soc/intel/common/sst-ipc.c:266 sst_ipc_reply_find_msg() error: uninitialized symbol 'mask'.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@intel.com>
Link: https://lore.kernel.org/r/20190827141712.21015-3-amadeuszx.slawinski@linux.intel.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/soc/intel/common/sst-ipc.c | 2 ++
1 file changed, 2 insertions(+)

--- a/sound/soc/intel/common/sst-ipc.c
+++ b/sound/soc/intel/common/sst-ipc.c
@@ -211,6 +211,8 @@ struct ipc_message *sst_ipc_reply_find_m

if (ipc->ops.reply_msg_match != NULL)
header = ipc->ops.reply_msg_match(header, &mask);
+ else
+ mask = (u64)-1;

if (list_empty(&ipc->rx_list)) {
dev_err(ipc->dev, "error: rx list empty but received 0x%llx\n",

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