diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2011-12-18 20:41:19 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-03-19 14:06:12 -0300 |
| commit | b9d0aa6e211039548f1480a5838398d517f1c3a9 (patch) | |
| tree | 2e1a6bab9e8d9c393c6a2af528bbe0bc0a91e215 /drivers/media/video/v4l2-compat-ioctl32.c | |
| parent | f769c26085ee0945fba3ba0ea48781770a8c81e2 (diff) | |
[media] v4l: Add custom compat_ioctl32 operation
Drivers implementing custom ioctls need to handle 32-bit/64-bit
compatibility themselves. Provide them with a way to do so.
To avoid circular module dependencies, merge the v4l2-compat-ioctl32
module into videodev. There is no point in keeping them separate, as the
v4l2_compat_ioctl32() function is required by videodev if CONFIG_COMPAT
is set anyway.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-compat-ioctl32.c')
| -rw-r--r-- | drivers/media/video/v4l2-compat-ioctl32.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c index e6f67aa5b4c0..2829d256e4b7 100644 --- a/drivers/media/video/v4l2-compat-ioctl32.c +++ b/drivers/media/video/v4l2-compat-ioctl32.c @@ -14,12 +14,11 @@ */ #include <linux/compat.h> -#include <linux/videodev2.h> #include <linux/module.h> +#include <linux/videodev2.h> +#include <media/v4l2-dev.h> #include <media/v4l2-ioctl.h> -#ifdef CONFIG_COMPAT - static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret = -ENOIOCTLCMD; @@ -937,6 +936,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) { + struct video_device *vdev = video_devdata(file); long ret = -ENOIOCTLCMD; if (!file->f_op->unlocked_ioctl) @@ -1027,14 +1027,16 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) break; default: - printk(KERN_WARNING "compat_ioctl32: " - "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n", - _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd); + if (vdev->fops->compat_ioctl32) + ret = vdev->fops->compat_ioctl32(file, cmd, arg); + + if (ret == -ENOIOCTLCMD) + printk(KERN_WARNING "compat_ioctl32: " + "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n", + _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), + cmd); break; } return ret; } EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32); -#endif - -MODULE_LICENSE("GPL"); |