Re: [PATCH] linux/types.h: enable endian checks for all sparse builds

From: Bart Van Assche
Date: Thu Dec 08 2016 - 00:22:22 EST

On 12/07/16 18:29, Michael S. Tsirkin wrote:
> By now, linux is mostly endian-clean. Enabling endian-ness
> checks for everyone produces about 200 new sparse warnings for me -
> less than 10% over the 2000 sparse warnings already there.
> Not a big deal, OTOH enabling this helps people notice
> they are introducing new bugs.
> So let's just drop __CHECK_ENDIAN__. Follow-up patches
> can drop distinction between __bitwise and __bitwise__.

Hello Michael,

This patch makes a whole bunch of ccflags-y += -D__CHECK_ENDIAN__
statements obsolete. Have you considered to remove these statements?

Additionally, there are notable exceptions to the rule that most drivers
are endian-clean, e.g. drivers/scsi/qla2xxx. I would appreciate it if it
would remain possible to check such drivers with sparse without enabling
endianness checks. Have you considered to change #ifdef __CHECK_ENDIAN__
into e.g. #ifndef __DONT_CHECK_ENDIAN__?