From: Takashi Iwai <tiwai@xxxxxxx>
[ Upstream commit 95a48b7d4459948b6bacf809809cf01a7dc06d1d ]
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: 68541213720d ("ALSA: pcm: Direct in-kernel read/write support")
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
include/sound/pcm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index e054c583d3b3..4d0e52177398 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -1089,14 +1089,14 @@ 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
--
2.17.1
