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Code Issues Releases Wiki Activity

Revised 'Fixed a possible deadlock when detaching a receiver from a device' from version 2.3.9, which sometimes caused a black screen when switching channels

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This commit is contained in:
Klaus Schmidinger 2020-06-12 09:28:44 +02:00
parent 5cfa736ad0
commit 8e1be83b56
3 changed files with 12 additions and 7 deletions
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3
CONTRIBUTORS
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@ -3607,3 +3607,6 @@ J
for reporting a possible discrepancy of the primary device number in the LSTD and
PRIM commands
for adding support for EAC3 audio from other sources
Stefan Verse <Verse@amotronics.de>
for fixing an occasional black screen when switching channels

3
HISTORY
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@ -9463,3 +9463,6 @@ Video Disk Recorder Revision History
- Added a device hook for detecting whether a device provides EIT data (thanks to
Winfried Köhler).
- Fixed memory handling in cString::Append() (reported by Stefan Herdler).
- Revised 'Fixed a possible deadlock when detaching a receiver from a device' from
version 2.3.9, which sometimes caused a black screen when switching channels
(thanks to Stefan Verse).

13
device.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: device.c 4.31 2020/06/10 14:52:43 kls Exp $
* $Id: device.c 4.32 2020/06/12 09:28:44 kls Exp $
*/
#include "device.h"
@ -1822,17 +1822,16 @@ void cDevice::Detach(cReceiver *Receiver)
bool receiversLeft = false;
mutexReceiver.Lock();
for (int i = 0; i < MAXRECEIVERS; i++) {
if (receiver[i] == Receiver) {
if (receiver[i] == Receiver)
receiver[i] = NULL;
Receiver->device = NULL;
Receiver->Activate(false);
for (int n = 0; n < Receiver->numPids; n++)
DelPid(Receiver->pids[n]);
}
else if (receiver[i])
receiversLeft = true;
}
mutexReceiver.Unlock();
Receiver->device = NULL;
Receiver->Activate(false);
for (int n = 0; n < Receiver->numPids; n++)
DelPid(Receiver->pids[n]);
if (camSlot) {
if (Receiver->priority > MINPRIORITY) { // priority check to avoid an infinite loop with the CAM slot's caPidReceiver
camSlot->StartDecrypting();