ALSA: es1688: Remove almost always NULL parameter

snd_es1688_pcm() takes a pointer to a pointer of a PCM where if this
parameter is provided the newly allocated PCM is stored. This PCM is also
available from the pcm field of the snd_es1688 struct that got passed to the
same function. This patch updates all callers which passed a pointer to use
that field instead and then removes the parameter from the function. This
makes the code a bit shorter and cleaner.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

4 files changed, 6 insertions, 12 deletions

diff --git a/include/sound/es1688.h b/include/sound/es1688.h
index 1d636a2d8896..b34f23a5bb74 100644
--- a/include/sound/es1688.h
+++ b/include/sound/es1688.h
@@ -115,8 +115,7 @@ int snd_es1688_create(struct snd_card *card,
                       int mpu_irq,
                       int dma8,
                       unsigned short hardware);
-int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip, int device,
-                   struct snd_pcm **rpcm);
+int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip, int device);
 int snd_es1688_mixer(struct snd_card *card, struct snd_es1688 *chip);
 int snd_es1688_reset(struct snd_es1688 *chip);
 
diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
index 76001fe0579d..1901c2bb6c3b 100644
--- a/sound/isa/es1688/es1688.c
+++ b/sound/isa/es1688/es1688.c
@@ -138,10 +138,9 @@ static int snd_es1688_probe(struct snd_card *card, unsigned int n)
 {
         struct snd_es1688 *chip = card->private_data;
         struct snd_opl3 *opl3;
-        struct snd_pcm *pcm;
         int error;
 
-        error = snd_es1688_pcm(card, chip, 0, &pcm);
+        error = snd_es1688_pcm(card, chip, 0);
         if (error < 0)
                 return error;
 
@@ -150,9 +149,9 @@ static int snd_es1688_probe(struct snd_card *card, unsigned int n)
                 return error;
 
         strlcpy(card->driver, "ES1688", sizeof(card->driver));
-        strlcpy(card->shortname, pcm->name, sizeof(card->shortname));
+        strlcpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
         snprintf(card->longname, sizeof(card->longname),
-                "%s at 0x%lx, irq %i, dma %i", pcm->name, chip->port,
+                "%s at 0x%lx, irq %i, dma %i", chip->pcm->name, chip->port,
                  chip->irq, chip->dma8);
 
         if (fm_port[n] == SNDRV_AUTO_PORT)
diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
index b5450143407b..52aac8467178 100644
--- a/sound/isa/es1688/es1688_lib.c
+++ b/sound/isa/es1688/es1688_lib.c
@@ -728,8 +728,7 @@ static struct snd_pcm_ops snd_es1688_capture_ops = {
         .pointer =              snd_es1688_capture_pointer,
 };
 
-int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip,
-                   int device, struct snd_pcm **rpcm)
+int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip, int device)
 {
         struct snd_pcm *pcm;
         int err;
@@ -749,9 +748,6 @@ int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip,
         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                               snd_dma_isa_data(),
                                               64*1024, 64*1024);
-
-        if (rpcm)
-                *rpcm = pcm;
         return 0;
 }
 
diff --git a/sound/isa/gus/gusextreme.c b/sound/isa/gus/gusextreme.c
index 28a16936a397..acc655284a9c 100644
--- a/sound/isa/gus/gusextreme.c
+++ b/sound/isa/gus/gusextreme.c
@@ -284,7 +284,7 @@ static int snd_gusextreme_probe(struct device *dev, unsigned int n)
         }
         gus->codec_flag = 1;
 
-        error = snd_es1688_pcm(card, es1688, 0, NULL);
+        error = snd_es1688_pcm(card, es1688, 0);
         if (error < 0)
                 goto out;