Sorry, my bad, it seems that my sparse program was too old. After upgrading to the latest version, I could see the warning, too.
... and the cause was what I suspected: it's a 64bit compat type that defines the fields explicitly with __s32. I overlooked that it's always used for __KERNEL__. The tentative fix is below.
thanks,
Takashi
--- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -564,13 +564,13 @@ typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)]; #endif
struct __snd_pcm_mmap_status64 {
__s32 state; /* RO: state -SNDRV_PCM_STATE_XXXX */
snd_pcm_state_t state; /* RO: state -SNDRV_PCM_STATE_XXXX */ __u32 pad1; /* Needed for 64 bit alignment */ __pad_before_uframe __pad1; snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ __pad_after_uframe __pad2; struct __snd_timespec64 tstamp; /* Timestamp */
__s32 suspended_state; /* RO: suspended stream state */
snd_pcm_state_t suspended_state; /* RO: suspended streamstate */ __u32 pad3; /* Needed for 64 bit alignment */ struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */ };
Thanks, Takashi. I will prepare a patch with the fix.
Thanks, Ranjani