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ALSA: add dummy function to support shared mmap in nommu Blackfin arch 

Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Cliff Cai 2008-09-03 10:54:36 +02:00 committed by Jaroslav Kysela
parent b7c9d85205
commit 7003609b3b
1 changed files with 13 additions and 0 deletions
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13
sound/core/pcm_native.c
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@ -3385,6 +3385,17 @@ out:
} }
#endif /* CONFIG_SND_SUPPORT_OLD_API */ #endif /* CONFIG_SND_SUPPORT_OLD_API */
#ifndef CONFIG_MMU
unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr,
unsigned long len, unsigned long pgoff,
unsigned long flags)
{
return 0;
}
#else
# define dummy_get_unmapped_area NULL
#endif
/* /*
* Register section * Register section
*/ */
@ -3401,6 +3412,7 @@ const struct file_operations snd_pcm_f_ops[2] = {
.compat_ioctl = snd_pcm_ioctl_compat, .compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap, .mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync, .fasync = snd_pcm_fasync,
.get_unmapped_area = dummy_get_unmapped_area,
}, },
{ {
.owner = THIS_MODULE, .owner = THIS_MODULE,
@ -3413,5 +3425,6 @@ const struct file_operations snd_pcm_f_ops[2] = {
.compat_ioctl = snd_pcm_ioctl_compat, .compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap, .mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync, .fasync = snd_pcm_fasync,
.get_unmapped_area = dummy_get_unmapped_area,
} }
}; };