| Message ID | c441f18c-eb2a-3bdd-299a-696ccca2de9c@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ALSA: core: Call substream ack() method upon compat mmap, commit | expand |
On Mon, 12 Jul 2021 12:05:40 +0200, Alan Young wrote: > > If a 32-bit application is being used with a 64-bit kernel and is using > the mmap mechanism to write data, then the SNDRV_PCM_IOCTL_SYNC_PTR > ioctl results in calling snd_pcm_ioctl_sync_ptr_compat(). Make this use > pcm_lib_apply_appl_ptr() so that the substream's ack() method, if > defined, is called. > > The snd_pcm_sync_ptr() function, used in the 64-bit ioctl case, already > uses snd_pcm_ioctl_sync_ptr_compat(). > > > >From 9c3a4ffca82a0106cd858db8be29945cfbcc9952 Mon Sep 17 00:00:00 2001 > From: Alan Young <consult.awy@gmail.com> > Date: Fri, 9 Jul 2021 09:48:54 +0100 > Subject: [PATCH] ALSA: core: Call substream ack() method upon compat mmap > commit > > If a 32-bit application is being used with a 64-bit kernel and is using > the mmap mechanism to write data, then the SNDRV_PCM_IOCTL_SYNC_PTR > ioctl results in calling snd_pcm_ioctl_sync_ptr_compat(). Make this use > pcm_lib_apply_appl_ptr() so that the substream's ack() method, if > defined, is called. > > The snd_pcm_sync_ptr() function, used in the 64-bit ioctl case, already > uses snd_pcm_ioctl_sync_ptr_compat(). > > Signed-off-by: Alan Young <consult.awy@gmail.com> Thanks, applied. Takashi
From 9c3a4ffca82a0106cd858db8be29945cfbcc9952 Mon Sep 17 00:00:00 2001 From: Alan Young <consult.awy@gmail.com> Date: Fri, 9 Jul 2021 09:48:54 +0100 Subject: [PATCH] ALSA: core: Call substream ack() method upon compat mmap commit If a 32-bit application is being used with a 64-bit kernel and is using the mmap mechanism to write data, then the SNDRV_PCM_IOCTL_SYNC_PTR ioctl results in calling snd_pcm_ioctl_sync_ptr_compat(). Make this use pcm_lib_apply_appl_ptr() so that the substream's ack() method, if defined, is called. The snd_pcm_sync_ptr() function, used in the 64-bit ioctl case, already uses snd_pcm_ioctl_sync_ptr_compat(). Signed-off-by: Alan Young <consult.awy@gmail.com> --- sound/core/pcm_native.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 17a85f4815d5..91a749835ca1 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3057,9 +3057,14 @@ static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream, boundary = 0x7fffffff; snd_pcm_stream_lock_irq(substream); /* FIXME: we should consider the boundary for the sync from app */ - if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) - control->appl_ptr = scontrol.appl_ptr; - else + if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) { + err = pcm_lib_apply_appl_ptr(substream, + scontrol.appl_ptr); + if (err < 0) { + snd_pcm_stream_unlock_irq(substream); + return err; + } + } else scontrol.appl_ptr = control->appl_ptr % boundary; if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) control->avail_min = scontrol.avail_min; -- 2.31.1