ALSA: sh: Convert to the new PCM ops

Replace the copy and the silence ops with the new PCM ops.
Fixed also the user-space buffer copy with the proper
copy_from_user*() variant.

Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/sh/sh_dac_audio.c b/sound/sh/sh_dac_audio.c
index 461b310..c1e00ed 100644 (file)
--- a/sound/sh/sh_dac_audio.c
+++ b/sound/sh/sh_dac_audio.c
@@ -184,23 +184,36 @@ static int snd_sh_dac_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
        return 0;
 }
 
-static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream, int channel,
-       snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
+static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream,
+                              int channel, unsigned long pos,
+                              void __user *src, unsigned long count)
 {
        /* channel is not used (interleaved data) */
        struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
-       ssize_t b_count = frames_to_bytes(runtime , count);
-       ssize_t b_pos = frames_to_bytes(runtime , pos);
 
-       if (count < 0)
-               return -EINVAL;
+       if (copy_from_user_toio(chip->data_buffer + pos, src, count))
+               return -EFAULT;
+       chip->buffer_end = chip->data_buffer + pos + count;
 
-       if (!count)
-               return 0;
+       if (chip->empty) {
+               chip->empty = 0;
+               dac_audio_start_timer(chip);
+       }
+
+       return 0;
+}
 
-       memcpy_toio(chip->data_buffer + b_pos, src, b_count);
-       chip->buffer_end = chip->data_buffer + b_pos + b_count;
+static int snd_sh_dac_pcm_copy_kernel(struct snd_pcm_substream *substream,
+                                     int channel, unsigned long pos,
+                                     void *src, unsigned long count)
+{
+       /* channel is not used (interleaved data) */
+       struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
+       struct snd_pcm_runtime *runtime = substream->runtime;
+
+       memcpy_toio(chip->data_buffer + pos, src, count);
+       chip->buffer_end = chip->data_buffer + pos + count;
 
        if (chip->empty) {
                chip->empty = 0;
@@ -211,23 +224,15 @@ static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream, int channel,
 }
 
 static int snd_sh_dac_pcm_silence(struct snd_pcm_substream *substream,
-                                 int channel, snd_pcm_uframes_t pos,
-                                 snd_pcm_uframes_t count)
+                                 int channel, unsigned long pos,
+                                 unsigned long count)
 {
        /* channel is not used (interleaved data) */
        struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
-       ssize_t b_count = frames_to_bytes(runtime , count);
-       ssize_t b_pos = frames_to_bytes(runtime , pos);
-
-       if (count < 0)
-               return -EINVAL;
-
-       if (!count)
-               return 0;
 
-       memset_io(chip->data_buffer + b_pos, 0, b_count);
-       chip->buffer_end = chip->data_buffer + b_pos + b_count;
+       memset_io(chip->data_buffer + pos, 0, count);
+       chip->buffer_end = chip->data_buffer + pos + count;
 
        if (chip->empty) {
                chip->empty = 0;
@@ -256,8 +261,9 @@ static struct snd_pcm_ops snd_sh_dac_pcm_ops = {
        .prepare        = snd_sh_dac_pcm_prepare,
        .trigger        = snd_sh_dac_pcm_trigger,
        .pointer        = snd_sh_dac_pcm_pointer,
-       .copy           = snd_sh_dac_pcm_copy,
-       .silence        = snd_sh_dac_pcm_silence,
+       .copy_user      = snd_sh_dac_pcm_copy,
+       .copy_kernel    = snd_sh_dac_pcm_copy_kernel,
+       .fill_silence   = snd_sh_dac_pcm_silence,
        .mmap           = snd_pcm_lib_mmap_iomem,
 };