arm64: add missing data types in smp_load_acquire/smp_store_release

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commit 878a84d5a8 upstream.

Commit 8053871d0f ("smp: Fix smp_call_function_single_async()
locking") introduced a call to smp_load_acquire() with a u16 argument,
but we only cared about u32 and u64 types in that function so far.
This resulted in a compiler warning fortunately, pointing at an
uninitialized use. Due to the implementation structure the compiler
misses that bug in the smp_store_release(), though.
Add the u16 and u8 variants using ldarh/stlrh and ldarb/stlrb,
respectively. Together with the compiletime_assert_atomic_type() check
this should cover all cases now.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Andre Przywara 2015-04-20 11:14:19 +01:00 • committed by Ben Hutchings

parent d7d78c9371

commit bd83aaff98

1 changed files with 16 additions and 0 deletions

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arch/arm64/include/asm/barrier.h

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