Commit d0153c7f authored Jul 25, 2017 by Dave Martin Committed by Will Deacon Jul 26, 2017

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>

parent 6c17c1c3

arch/arm64/include/asm/sysreg.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -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)