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author | 2020-12-14 11:33:53 +0000 | |
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committer | 2020-12-15 12:38:02 +0000 | |
commit | bf023e76a8c004fe38e90a3f4bbd5b47cadb741f (patch) | |
tree | 20a81e0d9a8b6e938ed1daba9d2a26d728c979b4 /arch/arm64 | |
parent | arm64: topology: Drop the useless update to per-cpu cycles (diff) | |
download | linux-bf023e76a8c004fe38e90a3f4bbd5b47cadb741f.tar.gz linux-bf023e76a8c004fe38e90a3f4bbd5b47cadb741f.tar.bz2 linux-bf023e76a8c004fe38e90a3f4bbd5b47cadb741f.zip |
arm64: entry: suppress W=1 prototype warnings
When building with W=1, GCC complains that we haven't defined prototypes
for a number of non-static functions in entry-common.c:
| arch/arm64/kernel/entry-common.c:203:25: warning: no previous prototype for 'el1_sync_handler' [-Wmissing-prototypes]
| 203 | asmlinkage void noinstr el1_sync_handler(struct pt_regs *regs)
| | ^~~~~~~~~~~~~~~~
| arch/arm64/kernel/entry-common.c:377:25: warning: no previous prototype for 'el0_sync_handler' [-Wmissing-prototypes]
| 377 | asmlinkage void noinstr el0_sync_handler(struct pt_regs *regs)
| | ^~~~~~~~~~~~~~~~
| arch/arm64/kernel/entry-common.c:447:25: warning: no previous prototype for 'el0_sync_compat_handler' [-Wmissing-prototypes]
| 447 | asmlinkage void noinstr el0_sync_compat_handler(struct pt_regs *regs)
| | ^~~~~~~~~~~~~~~~~~~~~~~
... and so automated build systems using W=1 end up sending a number of
emails, despite this not being a real problem as the only callers are in
entry.S where prototypes cannot matter.
For similar cases in entry-common.c we added prototypes to
asm/exception.h, so let's do the same thing here for consistency.
Note that there are a number of other warnings printed with W=1, both
under arch/arm64 and in core code, and this patch only addresses the
cases in entry-common.c. Automated build systems typically filter these
warnings such that they're only reported when changes are made nearby,
so we don't need to solve them all at once.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201214113353.44417-1-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
-rw-r--r-- | arch/arm64/include/asm/exception.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h index 78537393b650..6546158d2f2d 100644 --- a/arch/arm64/include/asm/exception.h +++ b/arch/arm64/include/asm/exception.h @@ -31,6 +31,10 @@ static inline u32 disr_to_esr(u64 disr) return esr; } +asmlinkage void el1_sync_handler(struct pt_regs *regs); +asmlinkage void el0_sync_handler(struct pt_regs *regs); +asmlinkage void el0_sync_compat_handler(struct pt_regs *regs); + asmlinkage void noinstr enter_el1_irq_or_nmi(struct pt_regs *regs); asmlinkage void noinstr exit_el1_irq_or_nmi(struct pt_regs *regs); asmlinkage void enter_from_user_mode(void); |