From 75bd8e3f4c812aa64e9b162cf094087552105f4e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 15 Aug 2023 21:01:20 +0200 Subject: [PATCH] ALSA: nm256: Convert to generic PCM copy ops This patch converts the nm256 driver code to use the new unified PCM copy callback. It's a straightforward conversion from *_user() to *_iter() variants. Link: https://lore.kernel.org/r/20230815190136.8987-10-tiwai@suse.de Signed-off-by: Takashi Iwai --- sound/pci/nm256/nm256.c | 42 ++++++------------------------------------ 1 file changed, 6 insertions(+), 36 deletions(-) diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c index f99a1e9..34f9082 100644 --- a/sound/pci/nm256/nm256.c +++ b/sound/pci/nm256/nm256.c @@ -691,26 +691,12 @@ snd_nm256_playback_silence(struct snd_pcm_substream *substream, static int snd_nm256_playback_copy(struct snd_pcm_substream *substream, int channel, unsigned long pos, - void __user *src, unsigned long count) + struct iov_iter *src, unsigned long count) { struct snd_pcm_runtime *runtime = substream->runtime; struct nm256_stream *s = runtime->private_data; - if (copy_from_user_toio(s->bufptr + pos, src, count)) - return -EFAULT; - return 0; -} - -static int -snd_nm256_playback_copy_kernel(struct snd_pcm_substream *substream, - int channel, unsigned long pos, - void *src, unsigned long count) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct nm256_stream *s = runtime->private_data; - - memcpy_toio(s->bufptr + pos, src, count); - return 0; + return copy_from_iter_toio(s->bufptr + pos, src, count); } /* @@ -719,26 +705,12 @@ snd_nm256_playback_copy_kernel(struct snd_pcm_substream *substream, static int snd_nm256_capture_copy(struct snd_pcm_substream *substream, int channel, unsigned long pos, - void __user *dst, unsigned long count) + struct iov_iter *dst, unsigned long count) { struct snd_pcm_runtime *runtime = substream->runtime; struct nm256_stream *s = runtime->private_data; - if (copy_to_user_fromio(dst, s->bufptr + pos, count)) - return -EFAULT; - return 0; -} - -static int -snd_nm256_capture_copy_kernel(struct snd_pcm_substream *substream, - int channel, unsigned long pos, - void *dst, unsigned long count) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct nm256_stream *s = runtime->private_data; - - memcpy_fromio(dst, s->bufptr + pos, count); - return 0; + return copy_to_iter_fromio(dst, s->bufptr + pos, count); } #endif /* !__i386__ */ @@ -909,8 +881,7 @@ static const struct snd_pcm_ops snd_nm256_playback_ops = { .trigger = snd_nm256_playback_trigger, .pointer = snd_nm256_playback_pointer, #ifndef __i386__ - .copy_user = snd_nm256_playback_copy, - .copy_kernel = snd_nm256_playback_copy_kernel, + .copy = snd_nm256_playback_copy, .fill_silence = snd_nm256_playback_silence, #endif .mmap = snd_pcm_lib_mmap_iomem, @@ -924,8 +895,7 @@ static const struct snd_pcm_ops snd_nm256_capture_ops = { .trigger = snd_nm256_capture_trigger, .pointer = snd_nm256_capture_pointer, #ifndef __i386__ - .copy_user = snd_nm256_capture_copy, - .copy_kernel = snd_nm256_capture_copy_kernel, + .copy = snd_nm256_capture_copy, #endif .mmap = snd_pcm_lib_mmap_iomem, }; -- 2.7.4