The patch
ASoC: SOF: trace: fix unconditional free in trace release
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.6
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.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From e6110114d18d330c05fd6de9f31283fd086a5a3a Mon Sep 17 00:00:00 2001
From: Kai Vehmanen kai.vehmanen@linux.intel.com Date: Fri, 24 Jan 2020 15:36:22 -0600 Subject: [PATCH] ASoC: SOF: trace: fix unconditional free in trace release
Check if DMA pages were successfully allocated in initialization before calling free. For many types of memory (like sgbufs) the extra free is harmless, but not all backends track allocation state, so add an explicit check.
Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20200124213625.30186-5-pierre-louis.bossart@linux.... Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/sof/trace.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sof/trace.c b/sound/soc/sof/trace.c index 4bb65030819d..d815090252f8 100644 --- a/sound/soc/sof/trace.c +++ b/sound/soc/sof/trace.c @@ -343,7 +343,10 @@ void snd_sof_free_trace(struct snd_sof_dev *sdev)
snd_sof_release_trace(sdev);
- snd_dma_free_pages(&sdev->dmatb); - snd_dma_free_pages(&sdev->dmatp); + if (sdev->dma_trace_pages) { + snd_dma_free_pages(&sdev->dmatb); + snd_dma_free_pages(&sdev->dmatp); + sdev->dma_trace_pages = 0; + } } EXPORT_SYMBOL(snd_sof_free_trace);