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mips: asm: fix warning when disabling MIPS_FP_SUPPORT

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[ Upstream commit da09935975c8f8c90d6f57be2422dee5557206cd ]

When MIPS_FP_SUPPORT is disabled, __sanitize_fcr31() is defined as
nothing, which triggers a gcc warning:

    In file included from kernel/sched/core.c:79:
    kernel/sched/core.c: In function 'context_switch':
    ./arch/mips/include/asm/switch_to.h:114:39: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
      114 |                 __sanitize_fcr31(next);                                 \
          |                                       ^
    kernel/sched/core.c:5316:9: note: in expansion of macro 'switch_to'
     5316 |         switch_to(prev, next, prev);
          |         ^~~~~~~~~

Fix this by providing an empty body for __sanitize_fcr31() like one is
defined for __mips_mt_fpaff_switch_to().

Fixes: 36a498035bd2 ("MIPS: Avoid FCSR sanitization when CONFIG_MIPS_FP_SUPPORT=n")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonas Gorski 2024-10-12 12:12:14 +02:00 committed by Greg Kroah-Hartman
parent dfc2eb2901
commit 7961d460ec
1 changed files with 1 additions and 1 deletions
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arch/mips/include/asm/switch_to.h
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@ -97,7 +97,7 @@ do { \
} \
} while (0)
#else
# define __sanitize_fcr31(next)
# define __sanitize_fcr31(next) do { (void) (next); } while (0)
#endif
/*