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ALSA: pcm: Add __force to cast in snd_pcm_lib_read/write() 

The snd_pcm_lib_read() and snd_pcm_lib_write() inline functions have
the explicit cast from a user pointer to a kernel pointer, but they
lacks of __force prefix.

This fixes sparse warnings like:
  ./include/sound/pcm.h:1093:47: warning: cast removes address space of expression

Fixes: 6854121372 ("ALSA: pcm: Direct in-kernel read/write support")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2018-07-25 23:00:54 +02:00
parent 00966dcdf0
commit 95a48b7d44
1 changed files with 2 additions and 2 deletions
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4
include/sound/pcm.h
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@ -1090,14 +1090,14 @@ static inline snd_pcm_sframes_t
snd_pcm_lib_write(struct snd_pcm_substream *substream,
const void __user *buf, snd_pcm_uframes_t frames)
{
return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false);
return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, false);
}
static inline snd_pcm_sframes_t
snd_pcm_lib_read(struct snd_pcm_substream *substream,
void __user *buf, snd_pcm_uframes_t frames)
{
return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false);
return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, false);
}
static inline snd_pcm_sframes_t