On Fri, May 6, 2011 at 4:22 PM, Laurent Pinchart
<[email protected]> wrote:
> Hi Bob,
>
> On Friday 29 April 2011 12:11:34 Bob Liu wrote:
>> Revert commit:
>> V4L/DVB: v4l2-dev: remove get_unmapped_area(c29fcff3daafbf46d64a543c1950bb)
>> to restore NOMMU arch supporting.
>>
>> Signed-off-by: Bob Liu <[email protected]>
>
> git provides a 'git revert' command to revert patches. It formats the commit
Sorry, I haven't use 'git revert' before.
> message in a standard way. I'll use it instead of applying this patch to my
> tree and I'll keep your SoB line (unless you object to that).
>
Okay, Thanks a lot.
>> ---
>> drivers/media/video/v4l2-dev.c | 18 ++++++++++++++++++
>> include/media/v4l2-dev.h | 2 ++
>> 2 files changed, 20 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/media/video/v4l2-dev.c
>> b/drivers/media/video/v4l2-dev.c index 6dc7196..19d5ae2 100644
>> --- a/drivers/media/video/v4l2-dev.c
>> +++ b/drivers/media/video/v4l2-dev.c
>> @@ -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
>> diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
>> index 8266d5a..93e96fb 100644
>> --- a/include/media/v4l2-dev.h
>> +++ b/include/media/v4l2-dev.h
>> @@ -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 *);
>
> --
> Regards,
>
> Laurent Pinchart
>
--
Regards,
--Bob
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