The patch
ASoC: Intel: Skylake: Fix CLDMA buffer wrap case
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
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Thanks, Mark
From e797af53b8814dfbc3c6ac134c528b8ab480f275 Mon Sep 17 00:00:00 2001
From: Jeeja KP jeeja.kp@intel.com Date: Fri, 13 Nov 2015 19:22:10 +0530 Subject: [PATCH] ASoC: Intel: Skylake: Fix CLDMA buffer wrap case
When downloading the firmware/module, if the ring buffer boundary is reached, we need to wrap to the zeroth position. On next copy we need to copy till end of buffer and the remaining buffer needs to be copied from zeroth position.
In this case copy was not handled correctly when wrap condition is reached which caused invalid data to be copied resulting in invalid hash failure.
This patch fixes the issue by handling copy at the boundary condition correctly.
Signed-off-by: Jeeja KP jeeja.kp@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/intel/skylake/skl-sst-cldma.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/sound/soc/intel/skylake/skl-sst-cldma.c b/sound/soc/intel/skylake/skl-sst-cldma.c index 4ddabe30b62a..b03d9db0acad 100644 --- a/sound/soc/intel/skylake/skl-sst-cldma.c +++ b/sound/soc/intel/skylake/skl-sst-cldma.c @@ -180,6 +180,21 @@ static void skl_cldma_fill_buffer(struct sst_dsp *ctx, unsigned int size, ctx->cl_dev.dma_buffer_offset, trigger); dev_dbg(ctx->dev, "spib position: %d\n", ctx->cl_dev.curr_spib_pos);
+ /* + * Check if the size exceeds buffer boundary. If it exceeds + * max_buffer size, then copy till buffer size and then copy + * remaining buffer from the start of ring buffer. + */ + if (ctx->cl_dev.dma_buffer_offset + size > ctx->cl_dev.bufsize) { + unsigned int size_b = ctx->cl_dev.bufsize - + ctx->cl_dev.dma_buffer_offset; + memcpy(ctx->cl_dev.dmab_data.area + ctx->cl_dev.dma_buffer_offset, + curr_pos, size_b); + size -= size_b; + curr_pos += size_b; + ctx->cl_dev.dma_buffer_offset = 0; + } + memcpy(ctx->cl_dev.dmab_data.area + ctx->cl_dev.dma_buffer_offset, curr_pos, size);