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audio/null: Fix null pointer dereference

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Fix possible null pointer dereference at line 350-354
when 'device' is NULL at line 347.
Pointed out by cppcheck.

Change-Id: I25a090172a0d17ef3cb1fe607f70a31e579d13b0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3498
Reviewed-by: Jérôme Duval <[email protected]>
This commit is contained in:
Murai Takashi
2020-12-12 13:53:56 +00:00
committed by Adrien Destugues
parent 151de9ff9b
commit c3427db750
1 changed files with 4 additions and 1 deletions
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src/add-ons/kernel/drivers/audio/null/null_multi.c
+4 -1
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@@ -344,7 +344,10 @@ buffer_force_stop(device_t* device)
{ {
dprintf("null_audio: %s\n" , __func__ ); dprintf("null_audio: %s\n" , __func__ );
if (device && device->running) if (device == NULL)
return B_ERROR;
if (device->running)
null_stop_hardware(device); null_stop_hardware(device);
delete_area(device->playback_stream.buffer_area); delete_area(device->playback_stream.buffer_area);