From df918cd13d4325028449d0ca9a4d564e05aa8869 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 9 Aug 2021 09:18:28 +0200 Subject: [PATCH 5/7] ALSA: pci: rme: Set up buffer type properly Although the regression of the mmap was fixed in the recent commit dc0dc8a73e8e ("ALSA: pcm: Fix mmap breakage without explicit buffer setup"), RME9652 and HDSP drivers have still potential issues with their mmap handling. Namely, they use the default mmap handler without the standard buffer preallocation, and PCM core wouldn't use the coherent DMA mapping. It's practically OK on x86, but on some exotic architectures, it wouldn't work. This patch addresses the potential breakage by replacing the buffer setup with the proper macro. It also simplifies the source code, too. Signed-off-by: Takashi Iwai Fixes: https://bugs.archlinux.org/task/72059 --- sound/pci/rme9652/hdsp.c | 6 ++---- sound/pci/rme9652/rme9652.c | 6 ++---- 2 files changed, 4 insertions(+), 8 deletions(-) diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index 8457a4bbc3df..22b8b3357918 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -4518,8 +4518,7 @@ static int snd_hdsp_playback_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream); runtime->hw = snd_hdsp_playback_subinfo; - runtime->dma_area = hdsp->playback_buffer; - runtime->dma_bytes = HDSP_DMA_AREA_BYTES; + snd_pcm_set_runtime_buffer(substream, &hdsp->playback_dma_buf); hdsp->playback_pid = current->pid; hdsp->playback_substream = substream; @@ -4595,8 +4594,7 @@ static int snd_hdsp_capture_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream); runtime->hw = snd_hdsp_capture_subinfo; - runtime->dma_area = hdsp->capture_buffer; - runtime->dma_bytes = HDSP_DMA_AREA_BYTES; + snd_pcm_set_runtime_buffer(substream, &hdsp->capture_dma_buf); hdsp->capture_pid = current->pid; hdsp->capture_substream = substream; diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c index f1aad38760d6..9ad2533925c4 100644 --- a/sound/pci/rme9652/rme9652.c +++ b/sound/pci/rme9652/rme9652.c @@ -2279,8 +2279,7 @@ static int snd_rme9652_playback_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream); runtime->hw = snd_rme9652_playback_subinfo; - runtime->dma_area = rme9652->playback_buffer; - runtime->dma_bytes = RME9652_DMA_AREA_BYTES; + snd_pcm_set_runtime_buffer(substream, &rme9652->playback_dma_buf); if (rme9652->capture_substream == NULL) { rme9652_stop(rme9652); @@ -2339,8 +2338,7 @@ static int snd_rme9652_capture_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream); runtime->hw = snd_rme9652_capture_subinfo; - runtime->dma_area = rme9652->capture_buffer; - runtime->dma_bytes = RME9652_DMA_AREA_BYTES; + snd_pcm_set_runtime_buffer(substream, &rme9652->capture_dma_buf); if (rme9652->playback_substream == NULL) { rme9652_stop(rme9652); -- 2.33.1