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[07/13] ASoC: Intel: avs: Fix potential integer overflow

Message ID 20240405090929.1184068-8-cezary.rojewski@intel.com
State Accepted
Commit c7e832cabe635df47c2bf6df7801e97bf3045b1e
Headers show
Series ASoC: Intel: avs: Fixes and cleanups for 6.10 | expand

Commit Message

Cezary Rojewski April 5, 2024, 9:09 a.m. UTC 
While stream_tag for CLDMA on SKL-based platforms is always 1, function
hda_cldma_setup() uses AZX_SD_CTL_STRM() macro which does:
	stream_tag << 20

what combined with stream_tag type of 'unsigned int' generates a
potential overflow issue. Update the field type to fix that.

Fixes: 45864e49a05a ("ASoC: Intel: avs: Implement CLDMA transfer")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/avs/cldma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/sound/soc/intel/avs/cldma.c b/sound/soc/intel/avs/cldma.c
index d7a9390b5e48..585579840b64 100644
--- a/sound/soc/intel/avs/cldma.c
+++ b/sound/soc/intel/avs/cldma.c
@@ -35,7 +35,7 @@  struct hda_cldma {
 
 	unsigned int buffer_size;
 	unsigned int num_periods;
-	unsigned int stream_tag;
+	unsigned char stream_tag;
 	void __iomem *sd_addr;
 
 	struct snd_dma_buffer dmab_data;