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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-09-04 22:15:44 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2013-10-20 22:07:57 +0200 |
| commit | 20b65dd040ce38e2bc0fa3cae13b954c865b61fe (patch) | |
| tree | 27b8ae49b43b2b6b4e6635128936ebfcfd20d75c /sound/firewire/amdtp.h | |
| parent | 9dd81e3143b57d1bf7e8377ab29b86090baa55a8 (diff) | |
| download | linux-20b65dd040ce38e2bc0fa3cae13b954c865b61fe.tar.bz2 | |
ALSA: firewire: introduce amdtp_out_stream_running()
Introduce the helper function amdtp_out_stream_running(). This makes
many checks in amdtp.c clearer and frees the device drivers from having
to track this with a separate variable.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/firewire/amdtp.h')
| -rw-r--r-- | sound/firewire/amdtp.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h index fd4ce3030279..28b1bf5891e6 100644 --- a/sound/firewire/amdtp.h +++ b/sound/firewire/amdtp.h @@ -1,6 +1,7 @@ #ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED #define SOUND_FIREWIRE_AMDTP_H_INCLUDED +#include <linux/err.h> #include <linux/interrupt.h> #include <linux/mutex.h> #include "packets-buffer.h" @@ -92,6 +93,11 @@ void amdtp_out_stream_pcm_prepare(struct amdtp_out_stream *s); unsigned long amdtp_out_stream_pcm_pointer(struct amdtp_out_stream *s); void amdtp_out_stream_pcm_abort(struct amdtp_out_stream *s); +static inline bool amdtp_out_stream_running(struct amdtp_out_stream *s) +{ + return !IS_ERR(s->context); +} + /** * amdtp_out_stream_set_pcm - configure format of PCM samples * @s: the AMDTP output stream to be configured |