Re: [PATCH AUTOSEL 5.10 14/36] media: rkisp1: uapi: change hist_bins array type from __u16 to __u32

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On Tue, Feb 09, 2021 at 01:45:35PM +0100, Dafna Hirschfeld wrote:
> 
> 
> Am 08.02.21 um 21:46 schrieb Hans Verkuil:
> > On 08/02/2021 18:57, Sasha Levin wrote:
> > > From: Dafna Hirschfeld <dafna.hirschfeld@xxxxxxxxxxxxx>
> > > 
> > > [ Upstream commit 31f190e0ccac8b75d33fdc95a797c526cf9b149e ]
> > > 
> > > Each entry in the array is a 20 bits value composed of 16 bits unsigned
> > > integer and 4 bits fractional part. So the type should change to __u32.
> > > In addition add a documentation of how the measurements are done.
> > 
> > Dafna, Helen, does it make sense at all to backport these three patches to
> > when rkisp1 was a staging driver?
> > 
> > I would be inclined not to backport this.
> 
> I also don't think it makes sense since this changes the uapi and it is not really a bug fix.

Why was it ok to change the uapi in a newer kernel and not an older one?

thanks,

greg k-h



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