From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: arch/parisc/include/asm/pgtable.h: remove unused `old_pte'
parisc's set_pte_at() macro has set-but-not-used variable.
include/linux/pgtable.h: In function 'pte_clear_not_present_full':
arch/parisc/include/asm/pgtable.h:96:9: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable]
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/parisc/include/asm/pgtable.h | 2 --
1 file changed, 2 deletions(-)
--- a/arch/parisc/include/asm/pgtable.h~arch-parisc-include-asm-pgtableh-remove-unused-old_pte
+++ a/arch/parisc/include/asm/pgtable.h
@@ -93,10 +93,8 @@ static inline void purge_tlb_entries(str
#define set_pte_at(mm, addr, ptep, pteval) \
do { \
- pte_t old_pte; \
unsigned long flags; \
spin_lock_irqsave(pgd_spinlock((mm)->pgd), flags);\
- old_pte = *ptep; \
set_pte(ptep, pteval); \
purge_tlb_entries(mm, addr); \
spin_unlock_irqrestore(pgd_spinlock((mm)->pgd), flags);\
_
