[mythtv-commits] Ticket #12754: deadlock at startup with CEC enabled

[MythTV]

#12754: deadlock at startup with CEC enabled
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 Reporter:  bbaetz@…                    |          Owner:  stuarta
     Type:  Bug Report - Hang/Deadlock  |         Status:  closed
 Priority:  minor                       |      Milestone:  0.28.1
Component:  MythTV - General            |        Version:  0.28.0
 Severity:  medium                      |     Resolution:  fixed
 Keywords:  patch                       |  Ticket locked:  0
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Changes (by Bradley Baetz <bbaetz@…>):

 * status:  accepted => closed
 * resolution:   => fixed


Comment:

 In [changeset:"22ff48d7bafc622246141094b727dab47662bc3f/mythtv"]:
 {{{
 #!CommitTicketReference repository="mythtv"
 revision="22ff48d7bafc622246141094b727dab47662bc3f"
 Fixes #12754 - Fix deadlock in libcec initialization.

 Configuring the TV at startup is done from the main thread. However, when
 the
 TV state changes as a result of this, libCEC sends a message to the
 callback
 handler on its own thread, which tries to get the UI lock to reset the
 screensaver state. This results in a deadlock because the main thread
 already
 has the UI lock during startup time.

 Instead, run the initial setup activity at the start of the CEC handler
 thread.

 This was missed in the patch applied for #11986.

 Signed-off-by: Stuart Auchterlonie <stuarta at mythtv.org>
 }}}

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Ticket URL: <https://code.mythtv.org/trac/ticket/12754#comment:4>
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