mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-09-22 09:34:56 +02:00
Jacopo Mondi
ae76d82230
Now that it is guaranteed that file->private_data is set to point to the
'struct v4l2_fh' initialised by v4l2_fh_add() the v4l2-ioctl layer can
be modified to retrieve the v4l2_fh pointer from the file *.
As the __video_do_ioctl() function, that calls all the handlers modified
by this patch goes as:
static long __video_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
{
void *fh = file->private_data;
...
ret = info->func(ops, file, fh, arg);
}
This patch introduces no functional changes and makes it possible to
remove in future the 'fh' argument to all ioctl handlers.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.