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[media] Revert "V4L/DVB: v4l2-dev: remove get_unmapped_area"

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This reverts commit c29fcff3da.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Bob Liu 2011-05-06 05:20:09 -03:00 committed by Mauro Carvalho Chehab
parent 4bc90dea7b
commit ecc6517d94
2 changed files with 20 additions and 0 deletions
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18
drivers/media/video/v4l2-dev.c
View File

@ -352,6 +352,23 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return ret;
}
#ifdef CONFIG_MMU
#define v4l2_get_unmapped_area NULL
#else
static unsigned long v4l2_get_unmapped_area(struct file *filp,
unsigned long addr, unsigned long len, unsigned long pgoff,
unsigned long flags)
{
struct video_device *vdev = video_devdata(filp);
if (!vdev->fops->get_unmapped_area)
return -ENOSYS;
if (!video_is_registered(vdev))
return -ENODEV;
return vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);
}
#endif
static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm)
{
struct video_device *vdev = video_devdata(filp);
@ -454,6 +471,7 @@ static const struct file_operations v4l2_fops = {
.read = v4l2_read,
.write = v4l2_write,
.open = v4l2_open,
.get_unmapped_area = v4l2_get_unmapped_area,
.mmap = v4l2_mmap,
.unlocked_ioctl = v4l2_ioctl,
#ifdef CONFIG_COMPAT

2
include/media/v4l2-dev.h
View File

@ -62,6 +62,8 @@ struct v4l2_file_operations {
unsigned int (*poll) (struct file *, struct poll_table_struct *);
long (*ioctl) (struct file *, unsigned int, unsigned long);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
unsigned long (*get_unmapped_area) (struct file *, unsigned long,
unsigned long, unsigned long, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*open) (struct file *);
int (*release) (struct file *);