parisc: remove dead BIO_VMERGE_BOUNDARY and BIO_VMERGE_MAX_SIZE definitions

The block layer dropped the virtual merge feature
(b8b3e16c). BIO_VMERGE_BOUNDARY and
BIO_VMERGE_MAX_SIZE definitions are meaningless now.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>

arch/parisc/include/asm/io.h

@@ -4,12 +4,6 @@
 #include <linux/types.h>
 #include <asm/pgtable.h>
 
-extern unsigned long parisc_vmerge_boundary;
-extern unsigned long parisc_vmerge_max_size;
-
-#define BIO_VMERGE_BOUNDARY	parisc_vmerge_boundary
-#define BIO_VMERGE_MAX_SIZE	parisc_vmerge_max_size
-
 #define virt_to_phys(a) ((unsigned long)__pa(a))
 #define phys_to_virt(a) __va(a)
 #define virt_to_bus virt_to_phys

arch/parisc/kernel/setup.c

@@ -58,11 +58,6 @@ int parisc_bus_is_phys __read_mostly = 1;	/* Assume no IOMMU is present */
 EXPORT_SYMBOL(parisc_bus_is_phys);
 #endif
 
-/* This sets the vmerge boundary and size, it's here because it has to
- * be available on all platforms (zero means no-virtual merging) */
-unsigned long parisc_vmerge_boundary = 0;
-unsigned long parisc_vmerge_max_size = 0;
-
 void __init setup_cmdline(char **cmdline_p)
 {
 	extern unsigned int boot_args[];

drivers/parisc/ccio-dma.c

@@ -1578,8 +1578,6 @@ static int __init ccio_probe(struct parisc_device *dev)
 
 	ioc_count++;
 
-	parisc_vmerge_boundary = IOVP_SIZE;
-	parisc_vmerge_max_size = BITS_PER_LONG * IOVP_SIZE;
 	parisc_has_iommu();
 	return 0;
 }

drivers/parisc/sba_iommu.c

@@ -1978,8 +1978,6 @@ static int sba_driver_callback(struct parisc_device *dev)
 	proc_create("sba_iommu-bitmap", 0, root, &sba_proc_bitmap_fops);
 #endif
 
-	parisc_vmerge_boundary = IOVP_SIZE;
-	parisc_vmerge_max_size = IOVP_SIZE * BITS_PER_LONG;
 	parisc_has_iommu();
 	return 0;
 }