From: Jonathan Cameron <jonathan.cameron@huawei.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-fbdev@vger.kernel.org, linux-iio@vger.kernel.org,
linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org,
linux-nvme@lists.infradead.org,
platform-driver-x86@vger.kernel.org, sparclinux@vger.kernel.org,
devel@driverdev.osuosl.org, linux-scsi@vger.kernel.org,
linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org,
qat-linux@intel.com, amd-gfx@lists.freedesktop.org,
linux-input@vger.kernel.org, linux-media@vger.kernel.org,
linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org,
ceph-devel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org,
"David S. Miller" <davem@davemloft.net>,
linux-btrfs@vger.kernel.org, viro@zeniv.linux.org.uk
Subject: Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
Date: Mon, 17 Sep 2018 10:33:48 +0100 [thread overview]
Message-ID: <20180917103348.00003f31@huawei.com> (raw)
In-Reply-To: <20180912151134.436719-1-arnd@arndb.de>
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
next prev parent reply other threads:[~2018-09-17 9:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180912150142.157913-1-arnd@arndb.de>
2018-09-12 15:08 ` [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg Arnd Bergmann
2018-09-12 15:56 ` Jason Gunthorpe
2018-09-12 15:58 ` Daniel Vetter
2018-09-12 16:01 ` Mauro Carvalho Chehab
2018-09-12 18:13 ` Greg Kroah-Hartman
2018-09-14 14:23 ` David Sterba
2018-09-14 20:35 ` Darren Hart
2018-09-14 20:57 ` Al Viro
2018-09-18 17:51 ` Darren Hart
2018-09-18 17:59 ` Jason Gunthorpe
2018-09-24 20:18 ` Arnd Bergmann
2018-09-24 20:35 ` Jason Gunthorpe
2018-09-24 21:17 ` Arnd Bergmann
2018-09-17 9:33 ` Jonathan Cameron [this message]
2018-10-06 7:05 ` Bjorn Andersson
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=20180917103348.00003f31@huawei.com \
--to=jonathan.cameron@huawei.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=arnd@arndb.de \
--cc=ceph-devel@vger.kernel.org \
--cc=davem@davemloft.net \
--cc=devel@driverdev.osuosl.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=gregkh@linuxfoundation.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-btrfs@vger.kernel.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-fbdev@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-iio@vger.kernel.org \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-nvdimm@lists.01.org \
--cc=linux-nvme@lists.infradead.org \
--cc=linux-pci@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-remoteproc@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=netdev@vger.kernel.org \
--cc=platform-driver-x86@vger.kernel.org \
--cc=qat-linux@intel.com \
--cc=sparclinux@vger.kernel.org \
--cc=viro@zeniv.linux.org.uk \
/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).