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arm64: sysreg: Fix unprotected macro argmuent in write_sysreg 

write_sysreg() may misparse the value argument because it is used
without parentheses to protect it.

This patch adds the ( ) in order to avoid any surprises.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
[will: same change to write_sysreg_s]
Signed-off-by: Will Deacon <will.deacon@arm.com>
hifive-unleashed-5.1
Dave Martin 2017-07-25 12:52:41 +01:00 committed by Will Deacon
parent 6c17c1c309
commit d0153c7ff9
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/include/asm/sysreg.h
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@ -492,7 +492,7 @@ asm(
* the "%x0" template means XZR.
*/
#define write_sysreg(v, r) do { \
u64 __val = (u64)v; \
u64 __val = (u64)(v); \
asm volatile("msr " __stringify(r) ", %x0" \
: : "rZ" (__val)); \
} while (0)
@ -508,7 +508,7 @@ asm(
})
#define write_sysreg_s(v, r) do { \
u64 __val = (u64)v; \
u64 __val = (u64)(v); \
asm volatile("msr_s " __stringify(r) ", %x0" : : "rZ" (__val)); \
} while (0)