[PATCH 06/12] ARM: Convert xscale minicache_lock to raw_spinlock

[Uwe Kleine-König]

From: Thomas Gleixner <tglx at linutronix.de>

minicache_lock needs to be a real spinlock on preempt-rt. Convert it
to a raw_spinlock. No change for !RT kernels.

Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 arch/arm/mm/copypage-xscale.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c
index 9920c0a..e73cf5c 100644
--- a/arch/arm/mm/copypage-xscale.c
+++ b/arch/arm/mm/copypage-xscale.c
@@ -32,7 +32,7 @@
 #define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \
 				  L_PTE_MT_MINICACHE)
 
-static DEFINE_SPINLOCK(minicache_lock);
+static DEFINE_RAW_SPINLOCK(minicache_lock);
 
 /*
  * XScale mini-dcache optimised copy_user_highpage
@@ -98,14 +98,14 @@ void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
 	if (test_and_clear_bit(PG_dcache_dirty, &from->flags))
 		__flush_dcache_page(page_mapping(from), from);
 
-	spin_lock(&minicache_lock);
+	raw_spin_lock(&minicache_lock);
 
 	set_pte_ext(TOP_PTE(COPYPAGE_MINICACHE), pfn_pte(page_to_pfn(from), minicache_pgprot), 0);
 	flush_tlb_kernel_page(COPYPAGE_MINICACHE);
 
 	mc_copy_user_page((void *)COPYPAGE_MINICACHE, kto);
 
-	spin_unlock(&minicache_lock);
+	raw_spin_unlock(&minicache_lock);
 
 	kunmap_atomic(kto, KM_USER1);
 }
-- 
1.7.2.3