[PATCH] sound: Remove unneeded kmalloc() return value casts

Get rid of unnessesary casts of kmalloc() return value in sound/

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 12 insertions, 7 deletions

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 6b7a36774298..87b47c9564f7 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -631,7 +631,8 @@ int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,
                 return -EINVAL;
         }
         if (params->buffer_size != runtime->buffer_size) {
-                if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+                newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+                if (!newbuf)
                         return -ENOMEM;
                 kfree(runtime->buffer);
                 runtime->buffer = newbuf;
@@ -657,7 +658,8 @@ int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,
                 return -EINVAL;
         }
         if (params->buffer_size != runtime->buffer_size) {
-                if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+                newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+                if (!newbuf)
                         return -ENOMEM;
                 kfree(runtime->buffer);
                 runtime->buffer = newbuf;
diff --git a/sound/oss/dmasound/dmasound_awacs.c b/sound/oss/dmasound/dmasound_awacs.c
index 6ba8d6f45fe8..3bbc8105e9f1 100644
--- a/sound/oss/dmasound/dmasound_awacs.c
+++ b/sound/oss/dmasound/dmasound_awacs.c
@@ -2798,7 +2798,7 @@ __init setup_beep(void)
                         DBDMA_ALIGN(beep_dbdma_cmd_space);
         /* set up emergency dbdma cmd */
         emergency_dbdma_cmd = beep_dbdma_cmd+1 ;
-        beep_buf = (short *) kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
+        beep_buf = kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
         if (beep_buf == NULL) {
                 printk(KERN_ERR "dmasound_pmac: no memory for beep buffer\n");
                 kfree(beep_dbdma_cmd_space) ;
diff --git a/sound/oss/emu10k1/midi.c b/sound/oss/emu10k1/midi.c
index 959a96794dba..25ae8e4a488d 100644
--- a/sound/oss/emu10k1/midi.c
+++ b/sound/oss/emu10k1/midi.c
@@ -65,7 +65,8 @@ static int midiin_add_buffer(struct emu10k1_mididevice *midi_dev, struct midi_hd
 
         init_midi_hdr(midihdr);
 
-        if ((midihdr->data = (u8 *) kmalloc(MIDIIN_BUFLEN, GFP_KERNEL)) == NULL) {
+        midihdr->data = kmalloc(MIDIIN_BUFLEN, GFP_KERNEL);
+        if (!midihdr->data) {
                 ERROR();
                 kfree(midihdr);
                 return -1;
@@ -334,7 +335,8 @@ static ssize_t emu10k1_midi_write(struct file *file, const char __user *buffer,
         midihdr->bytesrecorded = 0;
         midihdr->flags = 0;
 
-        if ((midihdr->data = (u8 *) kmalloc(count, GFP_KERNEL)) == NULL) {
+        midihdr->data = kmalloc(count, GFP_KERNEL);
+        if (!midihdr->data) {
                 ERROR();
                 kfree(midihdr);
                 return -EINVAL;
@@ -545,7 +547,8 @@ int emu10k1_seq_midi_out(int dev, unsigned char midi_byte)
         midihdr->bytesrecorded = 0;
         midihdr->flags = 0;
 
-        if ((midihdr->data = (u8 *) kmalloc(1, GFP_KERNEL)) == NULL) {
+        midihdr->data = kmalloc(1, GFP_KERNEL);
+        if (!midihdr->data) {
                 ERROR();
                 kfree(midihdr);
                 return -EINVAL;
diff --git a/sound/oss/sh_dac_audio.c b/sound/oss/sh_dac_audio.c
index 8a9917c919c2..3f7427cd195a 100644
--- a/sound/oss/sh_dac_audio.c
+++ b/sound/oss/sh_dac_audio.c
@@ -289,7 +289,7 @@ static int __init dac_audio_init(void)
 
         in_use = 0;
 
-        data_buffer = (char *)kmalloc(BUFFER_SIZE, GFP_KERNEL);
+        data_buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL);
         if (data_buffer == NULL)
                 return -ENOMEM;