This is a note to let you know that I've just added the patch titled
ASoC: codecs: wsa884x: Correct Soundwire ports mask
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-codecs-wsa884x-correct-soundwire-ports-mask.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3f02af61b366821448eafd3cd155dbb9f5447ac3
Author: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Date: Fri Jul 26 16:10:46 2024 +0200
ASoC: codecs: wsa884x: Correct Soundwire ports mask
[ Upstream commit dcb6631d05152930e2ea70fd2abfd811b0e970b5 ]
Device has up to WSA884X_MAX_SWR_PORTS number of ports and the array
assigned to prop.sink_dpn_prop has 0..WSA884X_MAX_SWR_PORTS-1 elements.
On the other hand, GENMASK(high, low) creates an inclusive mask between
<high, low>, so we need the mask from 0 up to WSA884X_MAX_SWR_PORTS-1.
Theoretically, too wide mask could cause an out of bounds read in
sdw_get_slave_dpn_prop() in stream.c, however only in the case of buggy
driver, e.g. adding incorrect number of ports via
sdw_stream_add_slave().
Fixes: aa21a7d4f68a ("ASoC: codecs: wsa884x: Add WSA884x family of speakers")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Link: https://patch.msgid.link/20240726-asoc-wcd-wsa-swr-ports-genmask-v1-6-d4d7a8b56f05@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/codecs/wsa884x.c b/sound/soc/codecs/wsa884x.c
index ed8110511a5b1..1cd52fab7b40d 100644
--- a/sound/soc/codecs/wsa884x.c
+++ b/sound/soc/codecs/wsa884x.c
@@ -1866,7 +1866,7 @@ static int wsa884x_probe(struct sdw_slave *pdev,
WSA884X_MAX_SWR_PORTS))
dev_dbg(dev, "Static Port mapping not specified\n");
- pdev->prop.sink_ports = GENMASK(WSA884X_MAX_SWR_PORTS, 0);
+ pdev->prop.sink_ports = GENMASK(WSA884X_MAX_SWR_PORTS - 1, 0);
pdev->prop.simple_clk_stop_capable = true;
pdev->prop.sink_dpn_prop = wsa884x_sink_dpn_prop;
pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
