From: Kai Vehmanen kai.vehmanen@linux.intel.com
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 --- 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);