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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2017-05-23 22:40:20 +0900
committerTakashi Iwai <tiwai@suse.de>2017-05-24 23:47:42 +0200
commit097a7fe369421347405d448a5ee1d37087cad4ad (patch)
treebd325dc695572ef30071188309274bba6ef15657 /sound/isa/gus
parent4e361d3c962dda16e27d81e7aa9202828a8f7371 (diff)
downloadlinux-097a7fe369421347405d448a5ee1d37087cad4ad.tar.bz2
ALSA: gus: remove unused local flag
ALSA driver series for devices of Gravis Ultra Sound includes local variable 'snd_gf1_pcm_use_dma'. Although this is a flag to change behaviours of local implementations for 'struct snd_pcm_ops.copy' and 'struct snd_pcm_ops.silence', it's invariable during module lifetime. This commit removes this local variable and the relevant operations. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/isa/gus')
-rw-r--r--sound/isa/gus/gus_pcm.c49
1 files changed, 22 insertions, 27 deletions
diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index 33c1891f469a..0cc3f272edf1 100644
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -61,8 +61,6 @@ struct gus_pcm_private {
int final_volume;
};
-static int snd_gf1_pcm_use_dma = 1;
-
static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
{
struct gus_pcm_private *pcmp = private_data;
@@ -363,7 +361,9 @@ static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_gus_card *gus = pcmp->gus;
unsigned int bpos, len;
+ int w16, invert;
bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
len = samples_to_bytes(runtime, count);
@@ -373,18 +373,14 @@ static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
return -EIO;
if (copy_from_user(runtime->dma_area + bpos, src, len))
return -EFAULT;
- if (snd_gf1_pcm_use_dma && len > 32) {
- return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
- } else {
- struct snd_gus_card *gus = pcmp->gus;
- int err, w16, invert;
-
- w16 = (snd_pcm_format_width(runtime->format) == 16);
- invert = snd_pcm_format_unsigned(runtime->format);
- if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
- return err;
- }
- return 0;
+ if (len > 32)
+ return snd_gf1_pcm_block_change(substream, bpos,
+ pcmp->memory + bpos, len);
+
+ w16 = (snd_pcm_format_width(runtime->format) == 16);
+ invert = snd_pcm_format_unsigned(runtime->format);
+ return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
+ pcmp->memory + bpos, len, w16, invert);
}
static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
@@ -394,7 +390,9 @@ static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_gus_card *gus = pcmp->gus;
unsigned int bpos, len;
+ int w16, invert;
bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
len = samples_to_bytes(runtime, count);
@@ -402,19 +400,16 @@ static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
return -EIO;
if (snd_BUG_ON(bpos + len > pcmp->dma_size))
return -EIO;
- snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
- if (snd_gf1_pcm_use_dma && len > 32) {
- return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
- } else {
- struct snd_gus_card *gus = pcmp->gus;
- int err, w16, invert;
-
- w16 = (snd_pcm_format_width(runtime->format) == 16);
- invert = snd_pcm_format_unsigned(runtime->format);
- if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
- return err;
- }
- return 0;
+ snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
+ count);
+ if (len > 32)
+ return snd_gf1_pcm_block_change(substream, bpos,
+ pcmp->memory + bpos, len);
+
+ w16 = (snd_pcm_format_width(runtime->format) == 16);
+ invert = snd_pcm_format_unsigned(runtime->format);
+ return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
+ pcmp->memory + bpos, len, w16, invert);
}
static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,