[U-Boot] Are typedefs discouraged?

Hi All,

WARNING: do not add new typedefs #64: FILE: arch/arm/include/asm/arch-at91/at91_shdwn.h:19: +typedef struct at91_shdwn {

total: 0 errors, 1 warnings, 45 lines checked

xx has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS.

I assume that "rule" does not apply to u-boot, and such warnings can be ignored?

However why would typedefs be discouraged in kernel?

Reinhard