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powerpc/irq: remove inline assembly in hard_irq_disable macro 

Use WRITE_ONCE() instead of opencoding the saving of current
stack pointeur.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9f05937d8722ddd2064a7c2362d8f9000e15e1ba.1652863723.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-05-18 10:48:55 +02:00 committed by Michael Ellerman
parent 78ffe6a7e2
commit 077fc62b2b
1 changed files with 1 additions and 3 deletions
arch/powerpc/include/asm
hw_irq.h

4
arch/powerpc/include/asm/hw_irq.h
View File

@ -282,9 +282,7 @@ static inline bool pmi_irq_pending(void)
flags = irq_soft_mask_set_return(IRQS_ALL_DISABLED); \
local_paca->irq_happened |= PACA_IRQ_HARD_DIS; \
if (!arch_irqs_disabled_flags(flags)) { \
asm ("stdx %%r1, 0, %1 ;" \
: "=m" (local_paca->saved_r1) \
: "b" (&local_paca->saved_r1)); \
WRITE_ONCE(local_paca->saved_r1, current_stack_pointer);\
trace_hardirqs_off(); \
} \
} while(0)