media: verisilicon: fix excessive stack usage

In some configurations, gcc decides not to inline the register accessor
functions, which in turn leads to lots of temporary hantro_reg structures
on the stack that cannot be eliminated because they escape into an
uninlined function:

drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c:1022:1: warning: the frame size of 1112 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Mark all of these as __always_inline so the compiler is able to completely
eliminate the temporary structures instead, which brings the stack usage
back down to just the normal local variables.

Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
[hverkuil: fix function prototype alignment, wrap commit log]

Reported-by: kernel test robot <[email protected]>
Fixes: 727a400686a2 ("media: verisilicon: Add Rockchip AV1 decoder")
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Nicolas Dufresne <[email protected]>
Tested-by: Nathan Chancellor <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

0 files changed, 0 insertions, 0 deletions