diff options
Diffstat (limited to 'sound/soc/sof/trace.c')
| -rw-r--r-- | sound/soc/sof/trace.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/sound/soc/sof/trace.c b/sound/soc/sof/trace.c index f13024c8ebf2..ea8e4506d02e 100644 --- a/sound/soc/sof/trace.c +++ b/sound/soc/sof/trace.c @@ -12,6 +12,7 @@ #include <linux/sched/signal.h> #include "sof-priv.h" #include "ops.h" +#include "sof-utils.h" #define TRACE_FILTER_ELEMENTS_PER_ENTRY 4 #define TRACE_FILTER_MAX_CONFIG_STRING_LENGTH 1024 @@ -308,9 +309,6 @@ static ssize_t sof_dfsentry_trace_read(struct file *file, char __user *buffer, lpos_64 = lpos; lpos = do_div(lpos_64, buffer_size); - if (count > buffer_size - lpos) /* min() not used to avoid sparse warnings */ - count = buffer_size - lpos; - /* get available count based on current host offset */ avail = sof_wait_trace_avail(sdev, lpos, buffer_size); if (sdev->dtrace_error) { @@ -319,8 +317,16 @@ static ssize_t sof_dfsentry_trace_read(struct file *file, char __user *buffer, } /* make sure count is <= avail */ - count = avail > count ? count : avail; + if (count > avail) + count = avail; + /* + * make sure that all trace data is available for the CPU as the trace + * data buffer might be allocated from non consistent memory. + * Note: snd_dma_buffer_sync() is called for normal audio playback and + * capture streams also. + */ + snd_dma_buffer_sync(&sdev->dmatb, SNDRV_DMA_SYNC_CPU); /* copy available trace data to debugfs */ rem = copy_to_user(buffer, ((u8 *)(dfse->buf) + lpos), count); if (rem) @@ -411,7 +417,7 @@ int snd_sof_init_trace_ipc(struct snd_sof_dev *sdev) sdev->host_offset = 0; sdev->dtrace_draining = false; - ret = snd_sof_dma_trace_init(sdev, ¶ms.stream_tag); + ret = snd_sof_dma_trace_init(sdev, ¶ms); if (ret < 0) { dev_err(sdev->dev, "error: fail in snd_sof_dma_trace_init %d\n", ret); @@ -465,8 +471,9 @@ int snd_sof_init_trace(struct snd_sof_dev *sdev) } /* allocate trace data buffer */ - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, sdev->dev, - DMA_BUF_SIZE_FOR_TRACE, &sdev->dmatb); + ret = snd_dma_alloc_dir_pages(SNDRV_DMA_TYPE_DEV_SG, sdev->dev, + DMA_FROM_DEVICE, DMA_BUF_SIZE_FOR_TRACE, + &sdev->dmatb); if (ret < 0) { dev_err(sdev->dev, "error: can't alloc buffer for trace %d\n", ret); |