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Commit 7003609b authored by Cliff Cai's avatar Cliff Cai Committed by Jaroslav Kysela
Browse files

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



Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarCliff Cai <cliff.cai@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent b7c9d852

sound/core/pcm_native.c

+13 −0
Original line number Diff line number Diff line
@@ -3385,6 +3385,17 @@ static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, 
}

#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 @@ const struct file_operations snd_pcm_f_ops[2] = { 
		.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 @@ const struct file_operations snd_pcm_f_ops[2] = { 
		.compat_ioctl = 	snd_pcm_ioctl_compat,

		.mmap =			snd_pcm_mmap,

		.fasync =		snd_pcm_fasync,

		.get_unmapped_area =	dummy_get_unmapped_area,

	}

};