Hi Arnd,

On 5/14/21 11:34 PM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> On most architectures, gcc -Wextra warns about the list of error
> numbers containing both EDEADLK and EDEADLOCK:
> 
> lib/errname.c:15:67: warning: initialized field overwritten [-Woverride-init]
>     15 | #define E(err) [err + BUILD_BUG_ON_ZERO(err <= 0 || err > 300)] = "-" #err
>        |                                                                
   ^~~
> lib/errname.c:172:2: note: in expansion of macro 'E'
>    172 |  E(EDEADLK), /* EDEADLOCK */
>        |  ^
> 
> On parisc, a similar error happens with -ECANCELLED, which is an
> alias for ECANCELED.
> 
> Make the EDEADLK printing conditional on the number being distinct
> from EDEADLOCK, and remove the -ECANCELLED bit completely as it
> can never be hit.
> 
> To ensure these are correct, add static_assert lines that verify
> all the remaining aliases are in fact identical to the canonical
> name.
> 
> Fixes: 57f5677e535b ("printf: add support for printing symbolic error names")
> Cc: Petr Mladek <pmladek@suse.com>
> Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

LGTM
Acked-by: Uwe Kleine-König <uwe@kleine-koenig.org>

Thanks
Uwe