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 f39ff983b38..16b1a1e77e6 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__ */