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| author | Richard Fitzgerald | 2018-11-12 14:36:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2018-12-17 09:24:32 +0100 |
| commit | 737f3bb3e4be365707438421f25b3e28f1bdaf7a (patch) | |
| tree | 2e14c5446367434418096cb4013b6bb110970b87 /sound/soc/intel/skylake/skl.c | |
| parent | ASoC: rockchip: add missing slave_config setting for I2S (diff) | |
| download | kernel-qcow2-linux-737f3bb3e4be365707438421f25b3e28f1bdaf7a.tar.gz kernel-qcow2-linux-737f3bb3e4be365707438421f25b3e28f1bdaf7a.tar.xz kernel-qcow2-linux-737f3bb3e4be365707438421f25b3e28f1bdaf7a.zip | |
ASoC: wm_adsp: Fix dma-unsafe read of scratch registers
[ Upstream commit 20e00db2f59bdddf8a8e241473ef8be94631d3ae ]
Stack memory isn't DMA-safe so it isn't safe to use either
regmap_raw_read or regmap_bulk_read to read into stack memory.
The two functions to read the scratch registers were using
stack memory and regmap_raw_read. It's not worth allocating
memory just for this trivial read, and it isn't time-critical.
A simple regmap_read for each register is sufficient.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound/soc/intel/skylake/skl.c')
0 files changed, 0 insertions, 0 deletions