[AVR32] Simplify pte_alloc_one{,_kernel}

There's really no need to retry an allocation with __GFP_REPEAT set.
Also, use get_zeroed_page() and __GFP_ZERO to eliminate the extra call
to clear_page() afterwards.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

include/asm-avr32/pgalloc.h

@@ -38,18 +38,9 @@ static inline void pgd_free(pgd_t *pgd)
 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 					  unsigned long address)
 {
-	int count = 0;
 	pte_t *pte;
 
-	do {
-		pte = (pte_t *) __get_free_page(GFP_KERNEL | __GFP_REPEAT);
-		if (pte)
-			clear_page(pte);
-		else {
-			current->state = TASK_UNINTERRUPTIBLE;
-			schedule_timeout(HZ);
-		}
-	} while (!pte && (count++ < 10));
+	pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
 
 	return pte;
 }
@@ -57,18 +48,9 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 static inline struct page *pte_alloc_one(struct mm_struct *mm,
 					 unsigned long address)
 {
-	int count = 0;
 	struct page *pte;
 
-	do {
-		pte = alloc_pages(GFP_KERNEL, 0);
-		if (pte)
-			clear_page(page_address(pte));
-		else {
-			current->state = TASK_UNINTERRUPTIBLE;
-			schedule_timeout(HZ);
-		}
-	} while (!pte && (count++ < 10));
+	pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
 
 	return pte;
 }