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[ALSA] This patch removes memset() from snd_emu10k1_fx8010_info() which apparently

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isn't needed there.  Upatched code uses:
memset(info, 0, sizeof(info));
where 'info' is a pointer and therefore only first 4 bytes of 'info' gets
cleared on a 32bit machine.  Anyway looking at the code zeoring this memory
region isn't needed at all because the snd_emu10k1_fx8010_info() function
initializes all the 'info' fields on its own.  So that's why this code works
at all in its original form.
This patch removes this redundant code.  Also snd_emu10k1_fx8010_info() can't
fail so lets save some bytes and change its return type to void.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Mariusz Kozlowski 2007-08-11 11:06:09 +02:00 committed by Jaroslav Kysela
parent 6ca2cdcc5e
commit 51882453a7
1 changed files with 2 additions and 7 deletions
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9
sound/pci/emu10k1/emufx.c
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@ -2440,14 +2440,13 @@ static void copy_string(char *dst, char *src, char *null, int idx)
strcpy(dst, src);
}
static int snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
static void snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
struct snd_emu10k1_fx8010_info *info)
{
char **fxbus, **extin, **extout;
unsigned short fxbus_mask, extin_mask, extout_mask;
int res;
memset(info, 0, sizeof(info));
info->internal_tram_size = emu->fx8010.itram_size;
info->external_tram_size = emu->fx8010.etram_pages.bytes / 2;
fxbus = fxbuses;
@ -2464,7 +2463,6 @@ static int snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
for (res = 16; res < 32; res++, extout++)
copy_string(info->extout_names[res], extout_mask & (1 << res) ? *extout : NULL, "Unused", res);
info->gpr_controls = emu->fx8010.gpr_count;
return 0;
}
static int snd_emu10k1_fx8010_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
@ -2485,10 +2483,7 @@ static int snd_emu10k1_fx8010_ioctl(struct snd_hwdep * hw, struct file *file, un
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
if ((res = snd_emu10k1_fx8010_info(emu, info)) < 0) {
kfree(info);
return res;
}
snd_emu10k1_fx8010_info(emu, info);
if (copy_to_user(argp, info, sizeof(*info))) {
kfree(info);
return -EFAULT;