May 2018 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] Sound is not working for my headphones although it works for Windows 10
by Faisal Ahmed Moshiur 16 May '18

16 May '18

http://www.alsa-project.org/db/?f=8864f5f90259b36ff18270e6242508f64cba4292 This contains my PC info.

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[alsa-devel] Aplay Fails When Reading From stdin
by Jay Foster 16 May '18

16 May '18

I recently updated may alsa from 1.1.4.1 to 1.1.6. I now noticed that aplay does not work properly (the same as 1.1.4.1) when reading the sound file data from stdin. This might have something to do with the recent change with reading the sound file header. With the previous version of aplay, aplay would report: Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono With 1.1.6, aplay reports: Playing raw data 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono This results in static/noise output. If I explicitly add the '-f S16_LE -r 22050' options to aplay, then it does play correctly. Is this a known bug and is there a fix? Jay

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Re: [alsa-devel] [PATCH v2 09/11] docs: Fix some broken references
by Mathieu Poirier 16 May '18

16 May '18

On 9 May 2018 at 07:18, Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org> wrote: > As we move stuff around, some doc references are broken. Fix some of > them via this script: > ./scripts/documentation-file-ref-check --fix-rst > > Manually checked if the produced result is valid, removing a few > false-positives. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org> > --- > > diff --git a/Documentation/trace/coresight.txt b/Documentation/trace/coresight.txt > index 1d74ad0202b6..efbc832146e7 100644 > --- a/Documentation/trace/coresight.txt > +++ b/Documentation/trace/coresight.txt > @@ -426,5 +426,5 @@ root@genericarmv8:~# > Details on how to use the generic STM API can be found here [2]. > > [1]. Documentation/ABI/testing/sysfs-bus-coresight-devices-stm > -[2]. Documentation/trace/stm.txt > +[2]. Documentation/trace/stm.rst > [3]. https://github.com/Linaro/perf-opencsd Acked-by: Mathieu Poirier <mathieu.poirier(a)linaro.org>

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[alsa-devel] [bug report] ALSA: usb: add UAC3 BADD profiles support
by Dan Carpenter 16 May '18

16 May '18

[ Your patch didn't really introduce the bug, it just made it visible to static checkers. - dan ] Hello Ruslan Bilovol, The patch 17156f23e93c: "ALSA: usb: add UAC3 BADD profiles support" from May 4, 2018, leads to the following static checker warning: sound/usb/stream.c:984 snd_usb_get_audioformat_uac3() warn: possible memory leak of 'chmap' sound/usb/stream.c 864 865 chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); 866 if (!chmap) 867 return ERR_PTR(-ENOMEM); 868 869 if (num_channels == 1) { 870 chmap->map[0] = SNDRV_CHMAP_MONO; 871 } else { 872 chmap->map[0] = SNDRV_CHMAP_FL; 873 chmap->map[1] = SNDRV_CHMAP_FR; 874 } 875 876 chmap->channels = num_channels; 877 clock = UAC3_BADD_CS_ID9; 878 goto found_clock; 879 } 880 881 as = snd_usb_find_csint_desc(alts->extra, alts->extralen, 882 NULL, UAC_AS_GENERAL); 883 if (!as) { 884 dev_err(&dev->dev, 885 "%u:%d : UAC_AS_GENERAL descriptor not found\n", 886 iface_no, altno); 887 return NULL; 888 } 889 890 if (as->bLength < sizeof(*as)) { 891 dev_err(&dev->dev, 892 "%u:%d : invalid UAC_AS_GENERAL desc\n", 893 iface_no, altno); 894 return NULL; 895 } 896 897 cluster_id = le16_to_cpu(as->wClusterDescrID); 898 if (!cluster_id) { 899 dev_err(&dev->dev, 900 "%u:%d : no cluster descriptor\n", 901 iface_no, altno); 902 return NULL; 903 } 904 905 /* 906 * Get number of channels and channel map through 907 * High Capability Cluster Descriptor 908 * 909 * First step: get High Capability header and 910 * read size of Cluster Descriptor 911 */ 912 err = snd_usb_ctl_msg(chip->dev, 913 usb_rcvctrlpipe(chip->dev, 0), 914 UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, 915 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 916 cluster_id, 917 snd_usb_ctrl_intf(chip), 918 &hc_header, sizeof(hc_header)); 919 if (err < 0) 920 return ERR_PTR(err); 921 else if (err != sizeof(hc_header)) { 922 dev_err(&dev->dev, 923 "%u:%d : can't get High Capability descriptor\n", 924 iface_no, altno); 925 return ERR_PTR(-EIO); 926 } 927 928 /* 929 * Second step: allocate needed amount of memory 930 * and request Cluster Descriptor 931 */ 932 wLength = le16_to_cpu(hc_header.wLength); 933 cluster = kzalloc(wLength, GFP_KERNEL); 934 if (!cluster) 935 return ERR_PTR(-ENOMEM); 936 err = snd_usb_ctl_msg(chip->dev, 937 usb_rcvctrlpipe(chip->dev, 0), 938 UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, 939 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 940 cluster_id, 941 snd_usb_ctrl_intf(chip), 942 cluster, wLength); 943 if (err < 0) { 944 kfree(cluster); 945 return ERR_PTR(err); 946 } else if (err != wLength) { 947 dev_err(&dev->dev, 948 "%u:%d : can't get Cluster Descriptor\n", 949 iface_no, altno); 950 kfree(cluster); 951 return ERR_PTR(-EIO); 952 } 953 954 num_channels = cluster->bNrChannels; 955 chmap = convert_chmap_v3(cluster); 956 kfree(cluster); 957 958 /* 959 * lookup the terminal associated to this interface 960 * to extract the clock 961 */ 962 input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, 963 as->bTerminalLink); 964 if (input_term) { 965 clock = input_term->bCSourceID; 966 goto found_clock; 967 } 968 969 output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf, 970 as->bTerminalLink); 971 if (output_term) { 972 clock = output_term->bCSourceID; 973 goto found_clock; 974 } 975 976 dev_err(&dev->dev, "%u:%d : bogus bTerminalLink %d\n", 977 iface_no, altno, as->bTerminalLink); 978 return NULL; 979 980 found_clock: 981 fp = audio_format_alloc_init(chip, alts, UAC_VERSION_3, iface_no, 982 altset_idx, altno, num_channels, clock); 983 if (!fp) 984 return ERR_PTR(-ENOMEM); We should free "chmap" before returning. 985 986 fp->chmap = chmap; 987 988 if (badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { 989 fp->attributes = 0; /* No attributes */ 990 991 fp->fmt_type = UAC_FORMAT_TYPE_I; 992 fp->formats = badd_formats; 993 994 fp->nr_rates = 0; /* SNDRV_PCM_RATE_CONTINUOUS */ 995 fp->rate_min = UAC3_BADD_SAMPLING_RATE; 996 fp->rate_max = UAC3_BADD_SAMPLING_RATE; 997 fp->rates = SNDRV_PCM_RATE_CONTINUOUS; 998 999 } else { 1000 fp->attributes = parse_uac_endpoint_attributes(chip, alts, 1001 UAC_VERSION_3, 1002 iface_no); 1003 /* ok, let's parse further... */ 1004 if (snd_usb_parse_audio_format_v3(chip, fp, as, stream) < 0) { 1005 kfree(fp->rate_table); 1006 kfree(fp); 1007 return NULL; And here as well? I don't know. 1008 } 1009 } 1010 1011 return fp; 1012 } regards, dan carpenter

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Re: [alsa-devel] [PATCH v2 09/11] docs: Fix some broken references
by Charles Keepax 16 May '18

16 May '18

On Wed, May 09, 2018 at 10:18:52AM -0300, Mauro Carvalho Chehab wrote: > As we move stuff around, some doc references are broken. Fix some of > them via this script: > ./scripts/documentation-file-ref-check --fix-rst > > Manually checked if the produced result is valid, removing a few > false-positives. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org> > --- > drivers/input/touchscreen/wm97xx-core.c | 2 +- Acked-by: Charles Keepax <ckeepax(a)opensource.wolfsonmicro.com> Thanks, Charles

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Re: [alsa-devel] [PATCH v2 09/11] docs: Fix some broken references
by Stephen Boyd 15 May '18

15 May '18

Quoting Mauro Carvalho Chehab (2018-05-09 06:18:52) > As we move stuff around, some doc references are broken. Fix some of > them via this script: > ./scripts/documentation-file-ref-check --fix-rst > > Manually checked if the produced result is valid, removing a few > false-positives. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org> > --- > drivers/clk/clk.c | 4 ++-- > drivers/clk/ingenic/cgu.h | 2 +- Acked-by: Stephen Boyd <sboyd(a)kernel.org>

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[alsa-devel] [PATCH 0/4] ALSA: hda/ca0132: constify local symbols
by Takashi Sakamoto 15 May '18

15 May '18

Hi, This module has some local symbols which are read-only. This commit adds 'const' qualifier to the symbols and applies some code optimization. Takashi Sakamoto (4): ALSA: hda/ca0132: constify templates for control element set ALSA: hda/ca0132: constify read-only members of string array ALSA: hda/ca0132: merge strings just for printk ALSA: hda/ca0132: constify parameter table for effects sound/pci/hda/patch_ca0132.c | 34 ++++++++++++++++------------------ 1 file changed, 16 insertions(+), 18 deletions(-) -- 2.14.1

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[alsa-devel] [alsa-lib][PATCH 0/6] control: optimization for position offset macro of TLV data
by Takashi Sakamoto 15 May '18

15 May '18

Hi, In development period for Linux v4.18, a series of SNDRV_CTL_TLVO_XXX macro was introduced to kernel stuffs for position offset of TLV data. This patchset backports the macros to this library as well as adds code optimization with them. Takashi Sakamoto (6): control: add a series of macro for offset of several types of TLV control: use position offset macro of TLV data hcontrol: use position offset macro of TLV data pcm: hw: use position offset macro of TLV data pcm: softvol: use position offset macro of TLV data test: use position offset macro of TLV data include/sound/tlv.h | 16 ++++++++++ src/control/control.c | 12 ++++---- src/control/control_hw.c | 6 ++-- src/control/control_local.h | 1 + src/control/hcontrol.c | 4 +-- src/control/tlv.c | 72 ++++++++++++++++++++++++--------------------- src/pcm/pcm_hw.c | 10 ++++--- src/pcm/pcm_softvol.c | 11 ++++--- test/user-ctl-element-set.c | 2 +- 9 files changed, 83 insertions(+), 51 deletions(-) -- 2.14.1

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[alsa-devel] [PATCH V3] ASoC: amd: modified dma pointer callback implementation
by Vijendar Mukunda 15 May '18

15 May '18

Modified dma pointer callback implementation. hw ptr calculated based on System Memory to ACP SRAM dma channel transfer count in case of playback. In case of capture, hw ptr calculated based on dma transfer count for ACP SRAM to System Memory Dma channel. Added IOC Bit for Sysmem to ACP Dma channel for both controller instances. Invoked snd_pcm_period_elapsed() call when IOC is reported for System memory to ACP SRAM DMA channel. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda(a)amd.com> Signed-off-by: Akshu Agrawal <akshu.agrawal(a)amd.com> --- v1->v2: removed hard coded values in acp dma pointer callback declared dma varaibles in rtd structure. v2->v3: modified code to invoke snd_pcm_period_elapsed() call when IOC reported for System Memory to ACP SRAM dma channel. This patch is dependent on [V4,10/10] ASoC: amd: dma driver changes for bt i2s instance https://patchwork.kernel.org/patch/10385381/ sound/soc/amd/acp-pcm-dma.c | 85 +++++++++++++++++++++++---------------------- sound/soc/amd/acp.h | 15 +++----- 2 files changed, 48 insertions(+), 52 deletions(-) diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c index 906eb77..dfb37b5 100644 --- a/sound/soc/amd/acp-pcm-dma.c +++ b/sound/soc/amd/acp-pcm-dma.c @@ -207,11 +207,13 @@ static void set_acp_sysmem_dma_descriptors(void __iomem *acp_mmio, switch (asic_type) { case CHIP_STONEY: dmadscr[i].xfer_val |= + BIT(22) | (ACP_DMA_ATTR_DAGB_GARLIC_TO_SHAREDMEM << 16) | (size / 2); break; default: dmadscr[i].xfer_val |= + BIT(22) | (ACP_DMA_ATTR_DAGB_ONION_TO_SHAREDMEM << 16) | (size / 2); } @@ -356,9 +358,11 @@ static void acp_dma_start(void __iomem *acp_mmio, dma_ctrl |= ACP_DMA_CNTL_0__DMAChRun_MASK; switch (ch_num) { + case SYSRAM_TO_ACP_CH_NUM: case ACP_TO_I2S_DMA_CH_NUM: case ACP_TO_SYSRAM_CH_NUM: case I2S_TO_ACP_DMA_CH_NUM: + case SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM: case ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM: case ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM: case I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM: @@ -642,10 +646,14 @@ static irqreturn_t dma_irq_handler(int irq, void *arg) config_acp_dma_channel(acp_mmio, SYSRAM_TO_ACP_CH_NUM, dscr_idx, 1, 0); acp_dma_start(acp_mmio, SYSRAM_TO_ACP_CH_NUM, false); + acp_reg_write((intr_flag & BIT(ACP_TO_I2S_DMA_CH_NUM)) << 16, + acp_mmio, mmACP_EXTERNAL_INTR_STAT); + } + if ((intr_flag & BIT(SYSRAM_TO_ACP_CH_NUM)) != 0) { + valid_irq = true; snd_pcm_period_elapsed(irq_data->play_i2ssp_stream); - - acp_reg_write((intr_flag & BIT(ACP_TO_I2S_DMA_CH_NUM)) << 16, + acp_reg_write((intr_flag & BIT(SYSRAM_TO_ACP_CH_NUM)) << 16, acp_mmio, mmACP_EXTERNAL_INTR_STAT); } @@ -661,12 +669,19 @@ static irqreturn_t dma_irq_handler(int irq, void *arg) dscr_idx, 1, 0); acp_dma_start(acp_mmio, SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM, false); - snd_pcm_period_elapsed(irq_data->play_i2sbt_stream); acp_reg_write((intr_flag & BIT(ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM)) << 16, acp_mmio, mmACP_EXTERNAL_INTR_STAT); } + if ((intr_flag & BIT(SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM)) != 0) { + valid_irq = true; + snd_pcm_period_elapsed(irq_data->play_i2sbt_stream); + acp_reg_write((intr_flag & + BIT(SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM)) << 16, + acp_mmio, mmACP_EXTERNAL_INTR_STAT); + } + if ((intr_flag & BIT(I2S_TO_ACP_DMA_CH_NUM)) != 0) { valid_irq = true; if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_15) == @@ -854,10 +869,9 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream, rtd->destination = TO_BLUETOOTH; rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH8; rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH9; - rtd->byte_cnt_high_reg_offset = - mmACP_I2S_BT_TRANSMIT_BYTE_CNT_HIGH; - rtd->byte_cnt_low_reg_offset = - mmACP_I2S_BT_TRANSMIT_BYTE_CNT_LOW; + rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_8; + rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_8; + rtd->end_dma_dscr = PLAYBACK_END_DMA_DESCR_CH8; adata->play_i2sbt_stream = substream; break; case I2S_SP_INSTANCE: @@ -875,10 +889,9 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream, rtd->destination = TO_ACP_I2S_1; rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH12; rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH13; - rtd->byte_cnt_high_reg_offset = - mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH; - rtd->byte_cnt_low_reg_offset = - mmACP_I2S_TRANSMIT_BYTE_CNT_LOW; + rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_12; + rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_12; + rtd->end_dma_dscr = PLAYBACK_END_DMA_DESCR_CH12; adata->play_i2ssp_stream = substream; } } else { @@ -891,10 +904,10 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream, rtd->destination = FROM_BLUETOOTH; rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH10; rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH11; - rtd->byte_cnt_high_reg_offset = - mmACP_I2S_BT_RECEIVE_BYTE_CNT_HIGH; - rtd->byte_cnt_low_reg_offset = - mmACP_I2S_BT_RECEIVE_BYTE_CNT_LOW; + rtd->dma_cntl = mmACP_DMA_CNTL_10; + rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_10; + rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_10; + rtd->end_dma_dscr = CAPTURE_END_DMA_DESCR_CH10; adata->capture_i2sbt_stream = substream; break; case I2S_SP_INSTANCE: @@ -914,10 +927,10 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream, rtd->destination = FROM_ACP_I2S_1; rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH14; rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH15; - rtd->byte_cnt_high_reg_offset = - mmACP_I2S_RECEIVED_BYTE_CNT_HIGH; - rtd->byte_cnt_low_reg_offset = - mmACP_I2S_RECEIVED_BYTE_CNT_LOW; + rtd->dma_cntl = mmACP_DMA_CNTL_14; + rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_14; + rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_14; + rtd->end_dma_dscr = CAPTURE_END_DMA_DESCR_CH14; adata->capture_i2ssp_stream = substream; } } @@ -955,22 +968,13 @@ static int acp_dma_hw_free(struct snd_pcm_substream *substream) return snd_pcm_lib_free_pages(substream); } -static u64 acp_get_byte_count(struct audio_substream_data *rtd) -{ - union acp_dma_count byte_count; - - byte_count.bcount.high = acp_reg_read(rtd->acp_mmio, - rtd->byte_cnt_high_reg_offset); - byte_count.bcount.low = acp_reg_read(rtd->acp_mmio, - rtd->byte_cnt_low_reg_offset); - return byte_count.bytescount; -} - static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream) { u32 buffersize; u32 pos = 0; - u64 bytescount = 0; + u32 dma_count = 0; + u16 dscr; + u32 period_bytes; struct snd_pcm_runtime *runtime = substream->runtime; struct audio_substream_data *rtd = runtime->private_data; @@ -979,11 +983,15 @@ static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream) return -EINVAL; buffersize = frames_to_bytes(runtime, runtime->buffer_size); - bytescount = acp_get_byte_count(rtd); - - if (bytescount > rtd->bytescount) - bytescount -= rtd->bytescount; - pos = do_div(bytescount, buffersize); + period_bytes = frames_to_bytes(runtime, runtime->period_size); + if ((substream->stream == SNDRV_PCM_STREAM_CAPTURE) && + acp_reg_read(rtd->acp_mmio, rtd->dma_cntl) == 0) + return 0; + dscr = acp_reg_read(rtd->acp_mmio, rtd->dma_curr_dscr); + dma_count = acp_reg_read(rtd->acp_mmio, rtd->cur_trans_cnt); + if (dscr == rtd->end_dma_dscr) + dma_count += period_bytes; + pos = dma_count % buffersize; return bytes_to_frames(runtime, pos); } @@ -1016,7 +1024,6 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) { int ret; u32 loops = 4000; - u64 bytescount = 0; struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_pcm_runtime *prtd = substream->private_data; @@ -1030,9 +1037,6 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_RESUME: - bytescount = acp_get_byte_count(rtd); - if (rtd->bytescount == 0) - rtd->bytescount = bytescount; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { acp_dma_start(rtd->acp_mmio, rtd->ch1, false); while (acp_reg_read(rtd->acp_mmio, mmACP_DMA_CH_STS) & @@ -1066,7 +1070,6 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) acp_dma_stop(rtd->acp_mmio, rtd->ch2); ret = acp_dma_stop(rtd->acp_mmio, rtd->ch1); } - rtd->bytescount = 0; break; default: ret = -EINVAL; diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h index 9cd3e96..4740804 100644 --- a/sound/soc/amd/acp.h +++ b/sound/soc/amd/acp.h @@ -131,12 +131,13 @@ struct audio_substream_data { u16 destination; u16 dma_dscr_idx_1; u16 dma_dscr_idx_2; + u16 end_dma_dscr; u32 pte_offset; u32 sram_bank; - u32 byte_cnt_high_reg_offset; - u32 byte_cnt_low_reg_offset; + u32 dma_cntl; + u32 dma_curr_dscr; + u32 cur_trans_cnt; uint64_t size; - u64 bytescount; void __iomem *acp_mmio; }; @@ -157,14 +158,6 @@ struct acp_platform_info { u16 i2s_instance; }; -union acp_dma_count { - struct { - u32 low; - u32 high; - } bcount; - u64 bytescount; -}; - enum { ACP_TILE_P1 = 0, ACP_TILE_P2, -- 2.7.4

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[alsa-devel] [PATCH 0/4] ALSA: hda: Bug fixes
by Sriram Periyasamy 15 May '18

15 May '18

The series contains few bug fixes and debug updates Pardha Saradhi K (4): ALSA: hda: Make sure DMA is stopped by reading back the RUN bit ALSA: hda: Make sure DMA is started by reading back the RUN bit ALSA: hda: Log HDA Hardware related errors ALSA: hda: check if stream is stopped in snd_hdac_stream_clear sound/hda/hdac_stream.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) -- 2.7.4

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