This is a note to let you know that I've just added the patch titled
ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-pcm-fix-missing-fixup-call-in-compat-hw_refine-ioctl.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 358040e3807754944dbddf948a23c6d914297ed7 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Tue, 29 Aug 2023 15:43:44 +0200
Subject: ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl
From: Takashi Iwai <tiwai@xxxxxxx>
commit 358040e3807754944dbddf948a23c6d914297ed7 upstream.
The update of rate_num/den and msbits were factored out to
fixup_unreferenced_params() function to be called explicitly after the
hw_refine or hw_params procedure. It's called from
snd_pcm_hw_refine_user(), but it's forgotten in the PCM compat ioctl.
This ended up with the incomplete rate_num/den and msbits parameters
when 32bit compat ioctl is used.
This patch adds the missing call in snd_pcm_ioctl_hw_params_compat().
Reported-by: Meng_Cai@xxxxxxxxxxxxxx
Fixes: f9a076bff053 ("ALSA: pcm: calculate non-mask/non-interval parameters always when possible")
Reviewed-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
Reviewed-by: Jaroslav Kysela <perex@xxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230829134344.31588-1-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/core/pcm_compat.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/sound/core/pcm_compat.c
+++ b/sound/core/pcm_compat.c
@@ -329,10 +329,14 @@ static int snd_pcm_ioctl_hw_params_compa
goto error;
}
- if (refine)
+ if (refine) {
err = snd_pcm_hw_refine(substream, data);
- else
+ if (err < 0)
+ goto error;
+ err = fixup_unreferenced_params(substream, data);
+ } else {
err = snd_pcm_hw_params(substream, data);
+ }
if (err < 0)
goto error;
if (copy_to_user(data32, data, sizeof(*data32)) ||
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-4.19/alsa-ac97-fix-possible-error-value-of-rac97.patch
queue-4.19/alsa-seq-oss-fix-racy-open-close-of-midi-devices.patch
queue-4.19/um-fix-hostaudio-build-errors.patch
queue-4.19/alsa-pcm-fix-missing-fixup-call-in-compat-hw_refine-ioctl.patch
