Make snd_pcm_lib_read() and *_write() static inline functions that call the common helper functions directly. This reduces a slight amount of codes, and at the same time, it's a preparation for the further cleanups / fixes.
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/pcm.h | 43 +++++++++++--- sound/core/pcm_lib.c | 157 ++++++++++++++++++--------------------------------- 2 files changed, 89 insertions(+), 111 deletions(-)
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 953ebfc83184..cb4eff8ffd2e 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -1088,15 +1088,40 @@ int snd_pcm_update_state(struct snd_pcm_substream *substream, int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); -snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, - const void __user *buf, - snd_pcm_uframes_t frames); -snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, - void __user *buf, snd_pcm_uframes_t frames); -snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, - void __user **bufs, snd_pcm_uframes_t frames); -snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, - void __user **bufs, snd_pcm_uframes_t frames); +snd_pcm_sframes_t __snd_pcm_lib_write(struct snd_pcm_substream *substream, + void *buf, bool interleaved, + snd_pcm_uframes_t frames); +snd_pcm_sframes_t __snd_pcm_lib_read(struct snd_pcm_substream *substream, + void *buf, bool interleaved, + snd_pcm_uframes_t frames); + +static inline snd_pcm_sframes_t +snd_pcm_lib_write(struct snd_pcm_substream *substream, + const void __user *buf, snd_pcm_uframes_t frames) +{ + return __snd_pcm_lib_write(substream, (void *)buf, true, frames); +} + +static inline snd_pcm_sframes_t +snd_pcm_lib_read(struct snd_pcm_substream *substream, + void __user *buf, snd_pcm_uframes_t frames) +{ + return __snd_pcm_lib_read(substream, (void *)buf, true, frames); +} + +static inline snd_pcm_sframes_t +snd_pcm_lib_writev(struct snd_pcm_substream *substream, + void __user **bufs, snd_pcm_uframes_t frames) +{ + return __snd_pcm_lib_write(substream, (void *)bufs, false, frames); +} + +static inline snd_pcm_sframes_t +snd_pcm_lib_readv(struct snd_pcm_substream *substream, + void __user **bufs, snd_pcm_uframes_t frames) +{ + return __snd_pcm_lib_read(substream, (void *)bufs, false, frames); +}
extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 5db086748515..7013e3d625ab 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1992,12 +1992,12 @@ static int wait_for_avail(struct snd_pcm_substream *substream, } typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, + void *data, unsigned int off, snd_pcm_uframes_t size);
static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, + void *data, unsigned int off, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -2019,7 +2019,7 @@ static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, + void *data, unsigned int off, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -2095,21 +2095,39 @@ static int pcm_accessible_state(struct snd_pcm_runtime *runtime) } }
-static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream, - unsigned long data, - snd_pcm_uframes_t size, - int nonblock, - transfer_f transfer) +snd_pcm_sframes_t __snd_pcm_lib_write(struct snd_pcm_substream *substream, + void *data, bool interleaved, + snd_pcm_uframes_t size) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_uframes_t xfer = 0; snd_pcm_uframes_t offset = 0; snd_pcm_uframes_t avail; - int err = 0; + transfer_f transfer; + bool nonblock; + int err; + + err = pcm_sanity_check(substream); + if (err < 0) + return err; + runtime = substream->runtime; + + if (interleaved) { + if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && + runtime->channels > 1) + return -EINVAL; + transfer = snd_pcm_lib_write_transfer; + } else { + if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) + return -EINVAL; + transfer = snd_pcm_lib_writev_transfer; + }
if (size == 0) return 0;
+ nonblock = !!(substream->f_flags & O_NONBLOCK); + snd_pcm_stream_lock_irq(substream); err = pcm_accessible_state(runtime); if (err < 0) @@ -2177,54 +2195,11 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream, snd_pcm_stream_unlock_irq(substream); return xfer > 0 ? (snd_pcm_sframes_t)xfer : err; } - -/* sanity-check for read/write methods */ -snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t size) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - - if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && - runtime->channels > 1) - return -EINVAL; - return snd_pcm_lib_write1(substream, (unsigned long)buf, size, nonblock, - snd_pcm_lib_write_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_write); - -snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, - void __user **bufs, - snd_pcm_uframes_t frames) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - - if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) - return -EINVAL; - return snd_pcm_lib_write1(substream, (unsigned long)bufs, frames, - nonblock, snd_pcm_lib_writev_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_writev); +EXPORT_SYMBOL(__snd_pcm_lib_write);
static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, + void *data, unsigned int off, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -2246,7 +2221,7 @@ static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream,
static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, + void *data, unsigned int off, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -2284,21 +2259,39 @@ static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream, return 0; }
-static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, - unsigned long data, - snd_pcm_uframes_t size, - int nonblock, - transfer_f transfer) +snd_pcm_sframes_t __snd_pcm_lib_read(struct snd_pcm_substream *substream, + void *data, bool interleaved, + snd_pcm_uframes_t size) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_uframes_t xfer = 0; snd_pcm_uframes_t offset = 0; snd_pcm_uframes_t avail; - int err = 0; + transfer_f transfer; + bool nonblock; + int err; + + err = pcm_sanity_check(substream); + if (err < 0) + return err; + runtime = substream->runtime; + + if (interleaved) { + if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && + runtime->channels > 1) + return -EINVAL; + transfer = snd_pcm_lib_read_transfer; + } else { + if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) + return -EINVAL; + transfer = snd_pcm_lib_readv_transfer; + }
if (size == 0) return 0;
+ nonblock = !!(substream->f_flags & O_NONBLOCK); + snd_pcm_stream_lock_irq(substream); err = pcm_accessible_state(runtime); if (err < 0) @@ -2373,47 +2366,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, snd_pcm_stream_unlock_irq(substream); return xfer > 0 ? (snd_pcm_sframes_t)xfer : err; } - -snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __user *buf, snd_pcm_uframes_t size) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED) - return -EINVAL; - return snd_pcm_lib_read1(substream, (unsigned long)buf, size, nonblock, snd_pcm_lib_read_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_read); - -snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, - void __user **bufs, - snd_pcm_uframes_t frames) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - if (runtime->status->state == SNDRV_PCM_STATE_OPEN) - return -EBADFD; - - nonblock = !!(substream->f_flags & O_NONBLOCK); - if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) - return -EINVAL; - return snd_pcm_lib_read1(substream, (unsigned long)bufs, frames, nonblock, snd_pcm_lib_readv_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_readv); +EXPORT_SYMBOL(__snd_pcm_lib_read);
/* * standard channel mapping helpers