sparc: Kill mmu_{un,}lockarea().

These were used on sun4c during floppy data transfers since on that
chip we had to lock the cpu mappings into the TLB because we cannot
take a TLB miss during the assembler floppy interrupt handler that
does the data transfer.

That is no longer necessary since we've removed sun4c support, thus
this stuff can disappear completely.

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 3 insertions, 20 deletions

diff --git a/arch/sparc/include/asm/dma.h b/arch/sparc/include/asm/dma.h
index 67e017fc9866..1ef6f0b0a39f 100644
--- a/arch/sparc/include/asm/dma.h
+++ b/arch/sparc/include/asm/dma.h
@@ -92,12 +92,6 @@ extern int isa_dma_bridge_buggy;
 #ifdef CONFIG_SPARC32
 
 /* Routines for data transfer buffers. */
-BTFIXUPDEF_CALL(char *, mmu_lockarea, char *, unsigned long)
-BTFIXUPDEF_CALL(void,   mmu_unlockarea, char *, unsigned long)
-
-#define mmu_lockarea(vaddr,len) BTFIXUP_CALL(mmu_lockarea)(vaddr,len)
-#define mmu_unlockarea(vaddr,len) BTFIXUP_CALL(mmu_unlockarea)(vaddr,len)
-
 struct page;
 struct device;
 struct scatterlist;
diff --git a/arch/sparc/include/asm/floppy_32.h b/arch/sparc/include/asm/floppy_32.h
index c514864cd2e2..fb3f16954c69 100644
--- a/arch/sparc/include/asm/floppy_32.h
+++ b/arch/sparc/include/asm/floppy_32.h
@@ -229,10 +229,7 @@ static inline void virtual_dma_init(void)
 static inline void sun_fd_disable_dma(void)
 {
 	doing_pdma = 0;
-	if (pdma_base) {
-		mmu_unlockarea(pdma_base, pdma_areasize);
-		pdma_base = NULL;
-	}
+	pdma_base = NULL;
 }
 
 static inline void sun_fd_set_dma_mode(int mode)
@@ -262,7 +259,6 @@ static inline void sun_fd_set_dma_count(int length)
 
 static inline void sun_fd_enable_dma(void)
 {
-	pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
 	pdma_base = pdma_vaddr;
 	pdma_areasize = pdma_size;
 }
diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h
index bcef1f5a2a6d..d534c276d706 100644
--- a/arch/sparc/include/asm/floppy_64.h
+++ b/arch/sparc/include/asm/floppy_64.h
@@ -161,10 +161,7 @@ unsigned long pdma_areasize;
 static void sun_fd_disable_dma(void)
 {
 	doing_pdma = 0;
-	if (pdma_base) {
-		mmu_unlockarea(pdma_base, pdma_areasize);
-		pdma_base = NULL;
-	}
+	pdma_base = NULL;
 }
 
 static void sun_fd_set_dma_mode(int mode)
@@ -194,7 +191,7 @@ static void sun_fd_set_dma_count(int length)
 
 static void sun_fd_enable_dma(void)
 {
-	pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
+	pdma_vaddr = pdma_vaddr;
 	pdma_base = pdma_vaddr;
 	pdma_areasize = pdma_size;
 }
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 76e4a52aa85e..61210db139fb 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -717,10 +717,6 @@ extern unsigned long find_ecache_flush_span(unsigned long size);
 struct seq_file;
 extern void mmu_info(struct seq_file *);
 
-/* These do nothing with the way I have things setup. */
-#define mmu_lockarea(vaddr, len)		(vaddr)
-#define mmu_unlockarea(vaddr, len)		do { } while(0)
-
 struct vm_area_struct;
 extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);