From: Oswald Buddenhagen Date: Thu, 6 Apr 2023 13:25:21 +0000 (+0200) Subject: ALSA: document that struct __snd_pcm_mmap_control64 is messed up X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=102882b5c62f6bfe403178bb36adef3ba542d148;p=linux.git ALSA: document that struct __snd_pcm_mmap_control64 is messed up 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 Link: https://lore.kernel.org/r/20230406132521.2252019-1-oswald.buddenhagen@gmx.de Signed-off-by: Takashi Iwai --- diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h index de6810e94abed..7eecc99ddef7d 100644 --- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -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 */