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<h3>
Tanu Kaskinen pushed to branch master
at <a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio">PulseAudio / pulseaudio</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/ede8cbb131f7493f14f5717aefd5b4e0603a05d1">ede8cbb1</a></strong>
<div>
<span>by Hui Wang</span>
<i>at 2020-07-09T16:43:17+08:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">alsa: make the unsuspend more robust
We met a weird situation on a couple of Lenovo machines and at least
on one Dell machine. First we open the gnome-sound-setting, then
suspend and resume the system, after the system resume back, the audio
devices change to dummy, the audio doesn't work anymore. And pacmd
list-cards shows no available sound card.
Through debugging I found after resume, the alsa receives POLLERR
events and it will call unsuspend to recover the pcm, but at that
moment, the device nodes in /dev/snd/ is not accessible, so the
snd_pcm_open() fails and the pulseaudio unload the module-alsa-card.
Here I add retry and pa_msleep if snd_pcm_open fails, I tested it on
all machines which have this problem, pa_msleep(25) is ok for most of
them, there is only one machine which needs to call pa_msleep(25)
twice, so for safety reason, I set the max retry times to 4.
Signed-off-by: Hui Wang <hui.wang@canonical.com>
</pre>
</li>
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<h4>2 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#b14579bff79260723b2b3e03f2ef1886578218f4">
src/modules/alsa/alsa-sink.c
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</li>
<li class="file-stats">
<a href="#2d0e24571daafee3381bffc2cf29ae2a071ce424">
src/modules/alsa/alsa-source.c
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="b14579bff79260723b2b3e03f2ef1886578218f4">
<a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/ede8cbb131f7493f14f5717aefd5b4e0603a05d1#b14579bff79260723b2b3e03f2ef1886578218f4"><strong>src/modules/alsa/alsa-sink.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1152,7 +1152,7 @@ static void update_size(struct userdata *u, pa_sample_spec *ss) {</td>
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1152
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<pre style="margin: 0;"> <span id="LC1152" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* Called from IO context */</span></span>
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1153
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<pre style="margin: 0;"> <span id="LC1153" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">unsuspend</span><span class="p">(</span><span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">userdata</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;">bool</span> <span class="n" style="color: #333;">recovering</span><span class="p">)</span> <span class="p">{</span></span>
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1154
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1154
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<pre style="margin: 0;"> <span id="LC1154" class="line" lang="c"> <span class="n" style="color: #333;">pa_sample_spec</span> <span class="n" style="color: #333;">ss</span><span class="p">;</span></span>
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1155
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<pre style="margin: 0;">-<span id="LC1155" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">err</span><span class="p">;</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1156" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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1155
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<pre style="margin: 0;">+<span id="LC1155" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">err</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">i</span></span><span class="p">;</span></span>
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1156
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1156
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<pre style="margin: 0;"> <span id="LC1156" class="line" lang="c"> <span class="n" style="color: #333;">bool</span> <span class="n" style="color: #333;">b</span><span class="p">,</span> <span class="n" style="color: #333;">d</span><span class="p">;</span></span>
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1157
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1157
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<pre style="margin: 0;"> <span id="LC1157" class="line" lang="c"> <span class="n" style="color: #333;">snd_pcm_uframes_t</span> <span class="n" style="color: #333;">period_frames</span><span class="p">,</span> <span class="n" style="color: #333;">buffer_frames</span><span class="p">;</span></span>
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1158
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1158
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<pre style="margin: 0;"> <span id="LC1158" class="line" lang="c"> <span class="n" style="color: #333;">snd_pcm_uframes_t</span> <span class="n" style="color: #333;">tsched_frames</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1172,13 +1172,26 @@ static int unsuspend(struct userdata *u, bool recovering) {</td>
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1172
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1172
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<pre style="margin: 0;"> <span id="LC1172" class="line" lang="c"> <span class="n" style="color: #333;">pa_snprintf</span><span class="p">(</span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">len</span><span class="p">,</span> <span class="s" style="color: #d14;">"%s,AES0=6"</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">);</span></span>
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1173
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1173
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<pre style="margin: 0;"> <span id="LC1173" class="line" lang="c"> <span class="p">}</span></span>
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1174
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<pre style="margin: 0;"> <span id="LC1174" class="line" lang="c"></span>
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1175
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<pre style="margin: 0;">-<span id="LC1175" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd_pcm_open</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pcm_handle</span><span class="p">,</span> <span class="n" style="color: #333;">device_name</span> <span class="o" style="font-weight: 600;">?</span> <span class="n" style="color: #333;">device_name</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">SND_PCM_STREAM_PLAYBACK</span><span class="p">,</span></span>
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1176
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<pre style="margin: 0;">-<span id="LC1176" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NONBLOCK</span><span class="o" style="font-weight: 600;">|</span></span>
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<pre style="margin: 0;">-<span id="LC1177" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_RESAMPLE</span><span class="o" style="font-weight: 600;">|</span></span>
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1178
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<pre style="margin: 0;">-<span id="LC1178" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_CHANNELS</span><span class="o" style="font-weight: 600;">|</span></span>
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1179
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<pre style="margin: 0;">-<span id="LC1179" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_FORMAT</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">-<span id="LC1180" class="line" lang="c"> <span class="n" style="color: #333;">pa_log</span><span class="p">(</span><span class="s" style="color: #d14;">"Error opening PCM device %s: %s"</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">pa_alsa_strerror</span><span class="p">(</span><span class="n" style="color: #333;">err</span><span class="p">));</span></span>
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1181
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<pre style="margin: 0;">-<span id="LC1181" class="line" lang="c"> <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">fail</span><span class="p">;</span></span>
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1175
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<pre style="margin: 0;">+<span id="LC1175" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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1176
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<pre style="margin: 0;">+<span id="LC1176" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * On some machines, during the system suspend and resume, the thread_func could receive</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1177
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<pre style="margin: 0;">+<span id="LC1177" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * POLLERR events before the dev nodes in /dev/snd/ are accessible, and thread_func calls</span></span>
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1178
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<pre style="margin: 0;">+<span id="LC1178" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * the unsuspend() to try to recover the PCM, this will make the snd_pcm_open() fail, here</span></span>
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1179
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<pre style="margin: 0;">+<span id="LC1179" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * we add msleep and retry to make sure those nodes are accessible.</span></span>
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1180
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<pre style="margin: 0;">+<span id="LC1180" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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1181
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<pre style="margin: 0;">+<span id="LC1181" class="line" lang="c"> <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">4</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>
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1182
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<pre style="margin: 0;">+<span id="LC1182" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd_pcm_open</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pcm_handle</span><span class="p">,</span> <span class="n" style="color: #333;">device_name</span> <span class="o" style="font-weight: 600;">?</span> <span class="n" style="color: #333;">device_name</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">SND_PCM_STREAM_PLAYBACK</span><span class="p">,</span></span>
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1183
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<pre style="margin: 0;">+<span id="LC1183" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NONBLOCK</span><span class="o" style="font-weight: 600;">|</span></span>
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1184
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<pre style="margin: 0;">+<span id="LC1184" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_RESAMPLE</span><span class="o" style="font-weight: 600;">|</span></span>
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1185
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<pre style="margin: 0;">+<span id="LC1185" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_CHANNELS</span><span class="o" style="font-weight: 600;">|</span></span>
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1186
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<pre style="margin: 0;">+<span id="LC1186" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_FORMAT</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">recovering</span><span class="p">)</span></span>
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1187
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<pre style="margin: 0;">+<span id="LC1187" class="line" lang="c"> <span class="n" style="color: #333;">pa_msleep</span><span class="p">(</span><span class="mi" style="color: #099;">25</span><span class="p">);</span></span>
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1188
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<pre style="margin: 0;">+<span id="LC1188" class="line" lang="c"> <span class="k" style="font-weight: 600;">else</span></span>
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1189
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<pre style="margin: 0;">+<span id="LC1189" class="line" lang="c"> <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>
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1190
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<pre style="margin: 0;">+<span id="LC1190" class="line" lang="c"> <span class="p">}</span></span>
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1191
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<pre style="margin: 0;">+<span id="LC1191" class="line" lang="c"></span>
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1192
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<pre style="margin: 0;">+<span id="LC1192" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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1193
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<pre style="margin: 0;">+<span id="LC1193" class="line" lang="c"> <span class="n" style="color: #333;">pa_log</span><span class="p">(</span><span class="s" style="color: #d14;">"Error opening PCM device %s: %s"</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">pa_alsa_strerror</span><span class="p">(</span><span class="n" style="color: #333;">err</span><span class="p">));</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1194
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<pre style="margin: 0;">+<span id="LC1194" class="line" lang="c"> <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">fail</span><span class="p">;</span></span>
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1182
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1195
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<pre style="margin: 0;"> <span id="LC1195" class="line" lang="c"> <span class="p">}</span></span>
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1183
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1196
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<pre style="margin: 0;"> <span id="LC1196" class="line" lang="c"></span>
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1184
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1197
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<pre style="margin: 0;"> <span id="LC1197" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">pa_frame_size</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">sink</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">sample_spec</span><span class="p">)</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">frame_size</span><span class="p">)</span> <span class="p">{</span></span>
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<a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/ede8cbb131f7493f14f5717aefd5b4e0603a05d1#2d0e24571daafee3381bffc2cf29ae2a071ce424"><strong>src/modules/alsa/alsa-source.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1033,7 +1033,7 @@ static void update_size(struct userdata *u, pa_sample_spec *ss) {</td>
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1033
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1033
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<pre style="margin: 0;"> <span id="LC1033" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* Called from IO context */</span></span>
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1034
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1034
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<pre style="margin: 0;"> <span id="LC1034" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">unsuspend</span><span class="p">(</span><span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">userdata</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;">bool</span> <span class="n" style="color: #333;">recovering</span><span class="p">)</span> <span class="p">{</span></span>
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1035
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1035
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<pre style="margin: 0;"> <span id="LC1035" class="line" lang="c"> <span class="n" style="color: #333;">pa_sample_spec</span> <span class="n" style="color: #333;">ss</span><span class="p">;</span></span>
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1036
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<pre style="margin: 0;">-<span id="LC1036" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">err</span><span class="p">;</span></span>
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1036
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<pre style="margin: 0;">+<span id="LC1036" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">err</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">i</span></span><span class="p">;</span></span>
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1037
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1037
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<pre style="margin: 0;"> <span id="LC1037" class="line" lang="c"> <span class="n" style="color: #333;">bool</span> <span class="n" style="color: #333;">b</span><span class="p">,</span> <span class="n" style="color: #333;">d</span><span class="p">;</span></span>
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1038
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1038
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<pre style="margin: 0;"> <span id="LC1038" class="line" lang="c"> <span class="n" style="color: #333;">snd_pcm_uframes_t</span> <span class="n" style="color: #333;">period_frames</span><span class="p">,</span> <span class="n" style="color: #333;">buffer_frames</span><span class="p">;</span></span>
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1039
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1039
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<pre style="margin: 0;"> <span id="LC1039" class="line" lang="c"> <span class="n" style="color: #333;">snd_pcm_uframes_t</span> <span class="n" style="color: #333;">tsched_frames</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1044" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1044" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1044,12 +1044,25 @@ static int unsuspend(struct userdata *u, bool recovering) {</td>
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1044
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1044
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<pre style="margin: 0;"> <span id="LC1044" class="line" lang="c"></span>
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1045
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1045
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<pre style="margin: 0;"> <span id="LC1045" class="line" lang="c"> <span class="n" style="color: #333;">pa_log_info</span><span class="p">(</span><span class="s" style="color: #d14;">"Trying resume..."</span><span class="p">);</span></span>
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1046
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1046
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<pre style="margin: 0;"> <span id="LC1046" class="line" lang="c"></span>
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1047
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<pre style="margin: 0;">-<span id="LC1047" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd_pcm_open</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pcm_handle</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">SND_PCM_STREAM_CAPTURE</span><span class="p">,</span></span>
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1048
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<pre style="margin: 0;">-<span id="LC1048" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NONBLOCK</span><span class="o" style="font-weight: 600;">|</span></span>
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1049
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<pre style="margin: 0;">-<span id="LC1049" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_RESAMPLE</span><span class="o" style="font-weight: 600;">|</span></span>
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1050
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<pre style="margin: 0;">-<span id="LC1050" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_CHANNELS</span><span class="o" style="font-weight: 600;">|</span></span>
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1051
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<pre style="margin: 0;">-<span id="LC1051" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_FORMAT</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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1052
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<pre style="margin: 0;">-<span id="LC1052" class="line" lang="c"> <span class="n" style="color: #333;">pa_log</span><span class="p">(</span><span class="s" style="color: #d14;">"Error opening PCM device %s: %s"</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">pa_alsa_strerror</span><span class="p">(</span><span class="n" style="color: #333;">err</span><span class="p">));</span></span>
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1047
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<pre style="margin: 0;">+<span id="LC1047" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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1048
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<pre style="margin: 0;">+<span id="LC1048" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * On some machines, during the system suspend and resume, the thread_func could receive</span></span>
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1049
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<pre style="margin: 0;">+<span id="LC1049" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * POLLERR events before the dev nodes in /dev/snd/ are accessible, and thread_func calls</span></span>
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1050
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<pre style="margin: 0;">+<span id="LC1050" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * the unsuspend() to try to recover the PCM, this will make the snd_pcm_open() fail, here</span></span>
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1051
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<pre style="margin: 0;">+<span id="LC1051" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * we add msleep and retry to make sure those nodes are accessible.</span></span>
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1052
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<pre style="margin: 0;">+<span id="LC1052" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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1053
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<pre style="margin: 0;">+<span id="LC1053" class="line" lang="c"> <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">4</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>
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1054
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<pre style="margin: 0;">+<span id="LC1054" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd_pcm_open</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pcm_handle</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">SND_PCM_STREAM_CAPTURE</span><span class="p">,</span></span>
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1055
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<pre style="margin: 0;">+<span id="LC1055" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NONBLOCK</span><span class="o" style="font-weight: 600;">|</span></span>
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1056
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<pre style="margin: 0;">+<span id="LC1056" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_RESAMPLE</span><span class="o" style="font-weight: 600;">|</span></span>
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1057
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<pre style="margin: 0;">+<span id="LC1057" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_CHANNELS</span><span class="o" style="font-weight: 600;">|</span></span>
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1058
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<pre style="margin: 0;">+<span id="LC1058" class="line" lang="c"> <span class="n" style="color: #333;">SND_PCM_NO_AUTO_FORMAT</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">recovering</span><span class="p">)</span></span>
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1059
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<pre style="margin: 0;">+<span id="LC1059" class="line" lang="c"> <span class="n" style="color: #333;">pa_msleep</span><span class="p">(</span><span class="mi" style="color: #099;">25</span><span class="p">);</span></span>
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1060
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<pre style="margin: 0;">+<span id="LC1060" class="line" lang="c"> <span class="k" style="font-weight: 600;">else</span></span>
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1061
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<pre style="margin: 0;">+<span id="LC1061" class="line" lang="c"> <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>
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1062
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<pre style="margin: 0;">+<span id="LC1062" class="line" lang="c"> <span class="p">}</span></span>
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1063
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<pre style="margin: 0;">+<span id="LC1063" class="line" lang="c"></span>
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1064
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<pre style="margin: 0;">+<span id="LC1064" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1065" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1065
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<pre style="margin: 0;">+<span id="LC1065" class="line" lang="c"> <span class="n" style="color: #333;">pa_log</span><span class="p">(</span><span class="s" style="color: #d14;">"Error opening PCM device %s: %s"</span><span class="p">,</span> <span class="n" style="color: #333;">u</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">device_name</span><span class="p">,</span> <span class="n" style="color: #333;">pa_alsa_strerror</span><span class="p">(</span><span class="n" style="color: #333;">err</span><span class="p">));</span></span>
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1053
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<td class="diff-line-num new_line" data-linenumber="1066" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1066
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<pre style="margin: 0;"> <span id="LC1066" class="line" lang="c"> <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">fail</span><span class="p">;</span></span>
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1054
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1067
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<pre style="margin: 0;"> <span id="LC1067" class="line" lang="c"> <span class="p">}</span></span>
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