From c48f12ee0acbd431d6c3ed249f79a6d68b757058 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Sun, 21 May 2017 09:35:21 +0200 Subject: ALSA: pcm: Call directly the common read/write helpers 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. Reviewed-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 156 ++++++++++++++++++--------------------------------- 1 file changed, 55 insertions(+), 101 deletions(-) (limited to 'sound/core/pcm_lib.c') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 51eeea9088de..ae030c5eb7c6 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1994,12 +1994,12 @@ 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; @@ -2021,7 +2021,7 @@ 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; @@ -2098,21 +2098,39 @@ 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) @@ -2180,53 +2198,11 @@ 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; } - -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; @@ -2248,7 +2224,7 @@ 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; @@ -2286,21 +2262,39 @@ 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) @@ -2375,47 +2369,7 @@ 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 -- cgit v1.2.3