[PATCH 5.9 230/757] soundwire: intel: fix NULL/ERR_PTR confusion

Greg Kroah-Hartman
2020-10-27T15:58:24Z

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

[ Upstream commit 06dcb4e443643db93b286f861133785ca46f5a19 ]

snd_soc_dai_get_sdw_stream() can only return the pointer to stream or
an ERR_PTR value, NULL is not a possible value.

Fixes: 09553140c8d7b ('soundwire: intel: implement get_sdw_stream() operations')
Reported-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200903204739.31206-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/soundwire/intel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index a283670659a92..10ff166977f8f 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1011,7 +1011,7 @@ static void *intel_get_sdw_stream(struct snd_soc_dai *dai,
dma = dai->capture_dma_data;

if (!dma)
- return NULL;
+ return ERR_PTR(-EINVAL);

return dma->stream;
}
--
2.25.1