Warnings on kernel 5.10 "BITS_TO_BYTES" redefined

[razvanphp]

I would love to update the kernel, but nvidia jetson/jetpack is unfortunately stuck with this version for now.

Can we fix those? Not sure if it can actually introduce issues:

/home/jetson/rtw89-main/core.h:4759: warning: "BITS_TO_BYTES" redefined
 4759 | #define BITS_TO_BYTES(nr)       __KERNEL_DIV_ROUND_UP(nr, BITS_PER_TYPE(char))
      |
In file included from ./include/linux/kernel.h:12,
                 from ./include/asm-generic/bug.h:20,
                 from ./arch/arm64/include/asm/bug.h:26,
                 from ./include/linux/bug.h:5,
                 from ./include/linux/average.h:5,
                 from /home/jetson/rtw89-main/core.h:8,
                 from /home/jetson/rtw89-main/phy.h:8,
                 from /home/jetson/rtw89-main/rtw8852a_rfk_table.h:8,
                 from /home/jetson/rtw89-main/rtw8852a_rfk_table.c:5:
./include/linux/bitops.h:18: note: this is the location of the previous definition
   18 | #define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(char))
      |
In file included from /home/jetson/rtw89-main/debug.h:8,
                 from /home/jetson/rtw89-main/txrx.h:8,
                 from /home/jetson/rtw89-main/pci.h:8,
                 from /home/jetson/rtw89-main/rtw8852ae.c:8:

BTW: if we can recompile the kernel, can we backport the missing features from 5.15?

Thank you!
R

[lwfinger]

That warning is harmless. It will not cause any problems.

Backporting features from 5.15 to 5.10 would be a large problem. We are working on getting a backports project that will do that, but it is not yet ready for users.