csky: fixup compile error with pte_alloc

Commit: 4cf58924951e remove the address argument of pte_alloc without
modify csky related code. linux-5.0-rc1 compile failed with csky.

Remove the unnecessary address testing in pte_alloc().

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/csky/include/asm/pgalloc.h b/arch/csky/include/asm/pgalloc.h
index bf4f4a0..d213bb4 100644 (file)
--- a/arch/csky/include/asm/pgalloc.h
+++ b/arch/csky/include/asm/pgalloc.h
@@ -24,41 +24,34 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 
 extern void pgd_init(unsigned long *p);
 
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
-                                       unsigned long address)
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
 {
        pte_t *pte;
-       unsigned long *kaddr, i;
+       unsigned long i;
 
-       pte = (pte_t *) __get_free_pages(GFP_KERNEL | __GFP_RETRY_MAYFAIL,
-                                        PTE_ORDER);
-       kaddr = (unsigned long *)pte;
-       if (address & 0x80000000)
-               for (i = 0; i < (PAGE_SIZE/4); i++)
-                       *(kaddr + i) = 0x1;
-       else
-               clear_page(kaddr);
+       pte = (pte_t *) __get_free_page(GFP_KERNEL);
+       if (!pte)
+               return NULL;
+
+       for (i = 0; i < PAGE_SIZE/sizeof(pte_t); i++)
+               (pte + i)->pte_low = _PAGE_GLOBAL;
 
        return pte;
 }
 
-static inline struct page *pte_alloc_one(struct mm_struct *mm,
-                                               unsigned long address)
+static inline struct page *pte_alloc_one(struct mm_struct *mm)
 {
        struct page *pte;
-       unsigned long *kaddr, i;
-
-       pte = alloc_pages(GFP_KERNEL | __GFP_RETRY_MAYFAIL, PTE_ORDER);
-       if (pte) {
-               kaddr = kmap_atomic(pte);
-               if (address & 0x80000000) {
-                       for (i = 0; i < (PAGE_SIZE/4); i++)
-                               *(kaddr + i) = 0x1;
-               } else
-                       clear_page(kaddr);
-               kunmap_atomic(kaddr);
-               pgtable_page_ctor(pte);
+
+       pte = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
+       if (!pte)
+               return NULL;
+
+       if (!pgtable_page_ctor(pte)) {
+               __free_page(pte);
+               return NULL;
        }
+
        return pte;
 }