From: Takashi Iwai <tiwai@suse.de>
To: "Arnd Bergmann" <arnd@arndb.de>
Cc: "Alexander Viro" <viro@zeniv.linux.org.uk>,
<alsa-devel@alsa-project.org>, "Vinod Koul" <vkoul@kernel.org>,
<linux-um@lists.infradead.org>, <y2038@lists.linaro.org>,
"Jaroslav Kysela" <perex@perex.cz>,
<linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls
Date: Mon, 29 Apr 2019 09:05:43 +0200 [thread overview]
Message-ID: <s5hv9yxjnp4.wl-tiwai@suse.de> (raw)
In-Reply-To: <s5hk1fthx9u.wl-tiwai@suse.de>
On Wed, 17 Apr 2019 10:05:33 +0200,
Takashi Iwai wrote:
>
> On Tue, 16 Apr 2019 22:28:05 +0200,
> Arnd Bergmann wrote:
> >
> > The SNDCTL_* and SOUND_* commands are the old OSS user interface.
> >
> > I checked all the sound ioctl commands listed in fs/compat_ioctl.c
> > to see if we still need the translation handlers. Here is what I
> > found:
> >
> > - sound/oss/ is (almost) gone from the kernel, this is what actually
> > needed all the translations
> > - The ALSA emulation for OSS correctly handles all compat_ioctl
> > commands already.
> > - sound/oss/dmasound/ is the last holdout of the original OSS code,
> > this is only used on arch/m68k, which has no 64-bit mode and
> > hence needs no compat handlers
> > - arch/um/drivers/hostaudio_kern.c may run in 64-bit mode with
> > 32-bit x86 user space underneath it. This rare corner case is
> > the only one that still needs the compat handlers.
> >
> > By adding a simple redirect of .compat_ioctl to .unlocked_ioctl in the
> > UML driver, we can remove all the COMPATIBLE_IOCTL() annotations without
> > a change in functionality. For completeness, I'm adding the same thing
> > to the dmasound file, knowing that it makes no difference.
> >
> > The compat_ioctl list contains one comment about SNDCTL_DSP_MAPINBUF and
> > SNDCTL_DSP_MAPOUTBUF, which actually would need a translation handler
> > if implemented. However, the native implementation just returns -EINVAL,
> > so we don't care.
> >
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> This looks like a really nice cleanup. Thanks!
>
> Reviewed-by: Takashi Iwai <tiwai@suse.de>
Is this supposed to be taken via sound git tree, or would you apply
over yours? I'm fine in either way.
thanks,
Takashi
next prev parent reply other threads:[~2019-04-29 7:05 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 20:19 [PATCH v3 00/26] compat_ioctl: cleanups Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 01/26] compat_ioctl: pppoe: fix PPPOEIOCSFWD handling Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 02/26] compat_ioctl: move simple ppp command handling into driver Arnd Bergmann
2019-04-17 21:13 ` Al Viro
2019-04-17 22:03 ` Arnd Bergmann
2019-04-17 23:53 ` Al Viro
2019-04-18 5:57 ` Al Viro
2019-04-18 15:14 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 03/26] compat_ioctl: avoid unused function warning for do_ioctl Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 04/26] compat_ioctl: move PPPIOCSCOMPRESS32 to ppp-generic.c Arnd Bergmann
2019-04-17 21:16 ` Al Viro
2019-04-17 21:44 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 05/26] compat_ioctl: move PPPIOCSPASS32/PPPIOCSACTIVE32 to ppp_generic.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 06/26] compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 07/26] compat_ioctl: move rtc handling into rtc-dev.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 08/26] compat_ioctl: add compat_ptr_ioctl() Arnd Bergmann
2019-04-17 21:19 ` Al Viro
2019-04-17 21:34 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 09/26] compat_ioctl: move drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:31 ` Jiri Kosina
2019-04-18 11:10 ` Stefan Hajnoczi
2019-04-19 23:16 ` Michael S. Tsirkin
2019-04-16 20:19 ` [PATCH v3 10/26] compat_ioctl: use correct compat_ptr() translation in drivers Arnd Bergmann
2019-04-17 21:21 ` Al Viro
2019-04-16 20:19 ` [PATCH v3 11/26] ceph: fix compat_ioctl for ceph_dir_operations Arnd Bergmann
2019-04-17 21:23 ` Al Viro
2019-04-17 21:31 ` Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 13/26] compat_ioctl: move tape handling into drivers Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 14/26] compat_ioctl: move ATYFB_CLK handling to atyfb driver Arnd Bergmann
2019-04-17 21:27 ` Al Viro
2019-04-17 21:28 ` Al Viro
2019-05-06 13:37 ` Bartlomiej Zolnierkiewicz
2019-04-16 20:25 ` [PATCH v3 15/26] compat_ioctl: move isdn/capi ioctl translation into driver Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 16/26] compat_ioctl: move rfcomm handlers " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 17/26] compat_ioctl: move hci_sock " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 18/26] compat_ioctl: remove HCIUART handling Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 19/26] compat_ioctl: remove HIDIO translation Arnd Bergmann
2019-04-17 9:46 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Marc Gonzalez
2019-04-25 15:21 ` Mauro Carvalho Chehab
2019-04-25 15:32 ` Arnd Bergmann
2019-04-25 15:35 ` Al Viro
2019-04-25 15:53 ` Mauro Carvalho Chehab
2019-04-25 15:55 ` Arnd Bergmann
2019-04-25 16:42 ` Al Viro
2019-04-25 21:25 ` Johannes Berg
2019-04-26 7:46 ` Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 21/26] compat_ioctl: remove IGNORE_IOCTL() Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 22/26] compat_ioctl: remove /dev/random commands Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 23/26] compat_ioctl: remove joystick ioctl translation Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 24/26] compat_ioctl: remove PCI " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 25/26] compat_ioctl: remove /dev/raw " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 26/26] compat_ioctl: remove last RAID handling code Arnd Bergmann
2019-04-17 8:05 ` [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls Takashi Iwai
2019-04-29 7:05 ` Takashi Iwai [this message]
2019-04-29 12:43 ` Arnd Bergmann
2019-04-16 22:33 ` [PATCH v3 00/26] compat_ioctl: cleanups Douglas Gilbert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=s5hv9yxjnp4.wl-tiwai@suse.de \
--to=tiwai@suse.de \
--cc=alsa-devel@alsa-project.org \
--cc=arnd@arndb.de \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-um@lists.infradead.org \
--cc=perex@perex.cz \
--cc=viro@zeniv.linux.org.uk \
--cc=vkoul@kernel.org \
--cc=y2038@lists.linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).