1
0
mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-11-10 00:11:52 +02:00
openwrt-xburst/target/linux/generic-2.6/patches-2.6.21/31-use_kbuild.h.patch
hauke c8e4b6534a [amazon] Add some build fixes for kernel 2.6.21 and the infineon amazon target.
Now it compiles with the new toolchain.
These are mostly backports from mainline linux and newer linux kernels from openwrt.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18345 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-11-08 21:56:59 +00:00

22 lines
807 B
Diff

[MIPS] Fix computation of {PGD,PMD,PTE}_T_LOG2.
For the generation of asm-offset.h to work these need to be evaulatable
by gcc as a constant expression. This issue did exist for a while but
didn't bite because they're only in asm-offset.h for debugging purposes.
--- a/include/asm-mips/pgtable.h
+++ b/include/asm-mips/pgtable.h
@@ -168,9 +168,9 @@ static inline void pte_clear(struct mm_s
#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
#endif
-#define PGD_T_LOG2 ffz(~sizeof(pgd_t))
-#define PMD_T_LOG2 ffz(~sizeof(pmd_t))
-#define PTE_T_LOG2 ffz(~sizeof(pte_t))
+#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
+#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1)
+#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];