Commit-ID: 58788a9b6060890e481c8111fac43d065560ebcb
Gitweb: https://git.kernel.org/tip/58788a9b6060890e481c8111fac43d065560ebcb
Author: Will Deacon <will.deacon@xxxxxxx>
AuthorDate: Wed, 18 Oct 2017 12:51:09 +0100
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 18 Oct 2017 15:15:07 +0200
locking/arch, powerpc/rtas: Use arch_spin_lock() instead of arch_spin_lock_flags()
arch_spin_lock_flags() is an internal part of the spinlock implementation
and is no longer available when SMP=n and DEBUG_SPINLOCK=y, so the PPC
RTAS code fails to compile in this configuration:
arch/powerpc/kernel/rtas.c: In function 'lock_rtas':
>> arch/powerpc/kernel/rtas.c:81:2: error: implicit declaration of function 'arch_spin_lock_flags' [-Werror=implicit-function-declaration]
arch_spin_lock_flags(&rtas.lock, flags);
^~~~~~~~~~~~~~~~~~~~
Since there's no good reason to use arch_spin_lock_flags() here (the code
in question already calls local_irq_save(flags)), switch it over to
arch_spin_lock and get things building again.
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1508327469-20231-1-git-send-email-will.deacon@xxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/powerpc/kernel/rtas.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 1643e9e..3f1c4fc 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -78,7 +78,7 @@ static unsigned long lock_rtas(void)
local_irq_save(flags);
preempt_disable();
- arch_spin_lock_flags(&rtas.lock, flags);
+ arch_spin_lock(&rtas.lock);
return flags;
}
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