powerpc: Get rid of bitfields in ppc_bat struct

While working on the 36-bit physical support, I noticed that there
was exactly one line of code that actually referenced the bitfields.
So I got rid of them and redefined ppc_bat as a struct of 2 u32's:
batu and batl.  I also got rid of the previous union that held the
bitfield structs and a word representation of the batu/l values.

This seems like a nicer solution than adding in a bunch of
new bitfields to support extended bat addressing that would never
get used, and just leaving the struct as-is would have been
incomplete in the face of large physical addressing.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 17 deletions

diff --git a/include/asm-powerpc/mmu-hash32.h b/include/asm-powerpc/mmu-hash32.h
index f39ff983b381..16b1a1e77e64 100644
--- a/include/asm-powerpc/mmu-hash32.h
+++ b/include/asm-powerpc/mmu-hash32.h
@@ -38,23 +38,8 @@
 #endif
 
 struct ppc_bat {
-        struct {
-                unsigned long bepi:15;  /* Effective page index (virtual address) */
-                unsigned long :4;       /* Unused */
-                unsigned long bl:11;    /* Block size mask */
-                unsigned long vs:1;     /* Supervisor valid */
-                unsigned long vp:1;     /* User valid */
-        } batu;                 /* Upper register */
-        struct {
-                unsigned long brpn:15;  /* Real page index (physical address) */
-                unsigned long :10;      /* Unused */
-                unsigned long w:1;      /* Write-thru cache */
-                unsigned long i:1;      /* Cache inhibit */
-                unsigned long m:1;      /* Memory coherence */
-                unsigned long g:1;      /* Guarded (MBZ in IBAT) */
-                unsigned long :1;       /* Unused */
-                unsigned long pp:2;     /* Page access protections */
-        } batl;                 /* Lower register */
+        u32 batu;
+        u32 batl;
 };
 #endif /* !__ASSEMBLY__ */