Openmoko Bug #2478: linux 2.6.39: alsa state not correctly restored in resume

[Openmoko Public Trac]

#2478: linux 2.6.39: alsa state not correctly restored in resume
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 Reporter:  lindi    |          Owner:  openmoko-kernel                        
     Type:  defect   |         Status:  new                                    
 Priority:  high     |      Milestone:                                         
Component:  kernel   |        Version:                                         
 Severity:  blocker  |       Keywords:  kernel alsa suspend resume linux 2.6.39
 Haspatch:  0        |      Blockedby:                                         
Estimated:           |    Patchreview:                                         
 Blocking:           |   Reproducible:  always                                 
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Comment(by lindi):

 Seems these calls to wm8753_set_bias_level come from

 {{{
 [ 3191.245000] [<bf17e7d8>] (wm8753_set_bias_level+0x0/0xb4
 [snd_soc_wm8753]) from [<bf155424>] (dapm_pre_sequence_async+0x34/0xb4
 [snd_soc_core])
 [ 3191.245000] [<bf155424>] (dapm_pre_sequence_async+0x34/0xb4
 [snd_soc_core]) from [<c005a1c0>] (async_run_entry_fn+0x7c/0x1b8)
 [ 3191.245000] [<c005a1c0>] (async_run_entry_fn+0x7c/0x1b8) from
 [<c004ff68>] (process_one_work+0x11c/0x3d8)
 [ 3191.245000] [<c004ff68>] (process_one_work+0x11c/0x3d8) from
 [<c00505b8>] (worker_thread+0x13c/0x478)
 [ 3191.245000] [<c00505b8>] (worker_thread+0x13c/0x478) from [<c0054138>]
 (kthread+0x88/0x90)
 }}}

 and

 {{{
 [ 3191.260000] [<bf17e7d8>] (wm8753_set_bias_level+0x0/0xb4
 [snd_soc_wm8753]) from [<bf155358>] (dapm_post_sequence_async+0x3c/0xd4
 [snd_soc_core])
 [ 3191.260000] [<bf155358>] (dapm_post_sequence_async+0x3c/0xd4
 [snd_soc_core]) from [<c005a1c0>] (async_run_entry_fn+0x7c/0x1b8)
 [ 3191.260000] [<c005a1c0>] (async_run_entry_fn+0x7c/0x1b8) from
 [<c004ff68>] (process_one_work+0x11c/0x3d8)
 [ 3191.260000] [<c004ff68>] (process_one_work+0x11c/0x3d8) from
 [<c00505b8>] (worker_thread+0x13c/0x478)
 [ 3191.260000] [<c00505b8>] (worker_thread+0x13c/0x478) from [<c0054138>]
 (kthread+0x88/0x90)
 }}}

 respectively.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2478#comment:7>
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