Exynos video codec driver uses reserved2 value. How will reserved2 be used for future use? Thanks Sunyoung > -----Original Message----- > From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Sent: Friday, April 17, 2020 5:35 PM > To: sy0816.kang@xxxxxxxxxxx > Cc: mchehab@xxxxxxxxxx; Hans Verkuil <hverkuil-cisco@xxxxxxxxx>; Arnd > Bergmann <arnd@xxxxxxxx>; Thomas Gleixner <tglx@xxxxxxxxxxxxx>; linux- > media@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH] media: v4l2-compat-ioctl32.c: copy reserved2 field in > get_v4l2_buffer32 > > On Fri, Apr 17, 2020 at 11:45:23AM +0900, sy0816.kang@xxxxxxxxxxx wrote: > > From: Sunyoung Kang <sy0816.kang@xxxxxxxxxxx> > > > > get_v4l2_buffer32() didn't copy reserved2 field from userspace to driver. > > So the reserved2 value is not received through compat-ioctl32 in driver. > > This patch copy reserved2 field of v4l2_buffer in get_v4l2_buffer32(). > > > > Signed-off-by: Sunyoung Kang <sy0816.kang@xxxxxxxxxxx> > > --- > > drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1 + > > 1 file changed, 1 insertion(+) > > What driver is using the reserved fields? They should be ignored as they > are "reserved" for future use. > > thanks, > > greg k-h
