From: Takashi Iwai tiwai@suse.de
[ 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@suse.de Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- 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