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ALSA: document that struct __snd_pcm_mmap_control64 is messed up

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I'm not the first one to run into this, see e.g.
https://lore.kernel.org/all/29QBMJU8DE71E.2YZSH8IHT5HMH@mforney.org/

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230406132521.2252019-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Oswald Buddenhagen 2023-04-06 15:25:21 +02:00 committed by Takashi Iwai
parent d3330cb8e3
commit 102882b5c6
1 changed files with 2 additions and 1 deletions
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3
include/uapi/sound/asound.h
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@ -570,7 +570,8 @@ struct __snd_pcm_mmap_status64 {
struct __snd_pcm_mmap_control64 {
__pad_before_uframe __pad1;
snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
__pad_before_uframe __pad2;
__pad_before_uframe __pad2; // This should be __pad_after_uframe, but binary
// backwards compatibility constraints prevent a fix.
__pad_before_uframe __pad3;
snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */