Re: [PATCH RESEND 0/7] Introduce MEDIA_VERSION to end KENREL_VERSION abuse in media

From: Johannes Thumshirn
Date: Thu Jun 29 2017 - 05:43:15 EST


On Sat, Jun 24, 2017 at 05:15:07PM -0300, Mauro Carvalho Chehab wrote:
> Sorry, but I can't see any advantage on it. On the downside, it
> includes the media controller header file (media.h) where it
> is not needed.

My reasoning was the differences in semantics. KERNEL_VERSION() is for
encoding the kernel's version triplet not a API or Hardware or whatever
version. Other subsystems do this as well, for instance in NVMe we have the
NVME_VS() macro which is used to encode the NVMe Spec compliance from a human
readable form to the hardware's u32. Also KERNEL_VERISON() shouldn't have
in-tree users IMHO. Yes there is _one_ other user of it in-tree which is EXT4
and I already talked to Jan Kara about it and we decided to leave it in until
4.20.

Byte,
Johannes
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