47 lines
1.5 KiB
Diff
47 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
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Date: Wed, 19 Jul 2017 00:41:43 +0530
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Subject: [PATCH] ALSA: hda: Log HDA Hardware related errors
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Detect the timeout while modifying HDA DMA related Registers
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for stream reset and print them to console for user information
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Change-Id: Id2441bee1fd6083cd11c4725af2d36cb90e9bf92
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Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
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Reviewed-on:
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Reviewed-by: Prakash, Divya1
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Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
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Tested-by: Sm, Bhadur A <bhadur.a.sm@intel.com>
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---
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sound/hda/hdac_stream.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c
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index 00954efaa483..0fdb6dd7f316 100644
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--- a/sound/hda/hdac_stream.c
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+++ b/sound/hda/hdac_stream.c
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@@ -147,6 +147,10 @@ void snd_hdac_stream_reset(struct hdac_stream *azx_dev)
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if (val)
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break;
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} while (--timeout);
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+
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+ if (!timeout)
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+ dev_err(azx_dev->bus->dev, "timeout on stream reset entry\n");
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+
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val &= ~SD_CTL_STREAM_RESET;
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snd_hdac_stream_writeb(azx_dev, SD_CTL, val);
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udelay(3);
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@@ -160,6 +164,9 @@ void snd_hdac_stream_reset(struct hdac_stream *azx_dev)
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break;
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} while (--timeout);
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+ if (!timeout)
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+ dev_err(azx_dev->bus->dev, "timeout on stream reset exit\n");
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+
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/* reset first position - may not be synced with hw at this time */
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if (azx_dev->posbuf)
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*azx_dev->posbuf = 0;
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--
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https://clearlinux.org
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