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>
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index df2299a..e61e125 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3385,6 +3385,17 @@
}
#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
*/
@@ -3401,6 +3412,7 @@
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = dummy_get_unmapped_area,
},
{
.owner = THIS_MODULE,
@@ -3413,5 +3425,6 @@
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = dummy_get_unmapped_area,
}
};