memblock: emphasize that memblock_alloc_range() returns a physical address

Rename memblock_alloc_range() to memblock_phys_alloc_range() to
emphasize that it returns a physical address.

While on it, remove the 'enum memblock_flags' parameter from this
function as its only user anyway sets it to MEMBLOCK_NONE, which is the
default for the most of memblock allocations.

Link: http://lkml.kernel.org/r/1548057848-15136-6-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/memblock.h

@@ -325,6 +325,8 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 #define ARCH_LOW_ADDRESS_LIMIT  0xffffffffUL
 #endif
 
+phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
+				      phys_addr_t start, phys_addr_t end);
 phys_addr_t memblock_phys_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
 
@@ -443,9 +445,6 @@ static inline bool memblock_bottom_up(void)
 	return memblock.bottom_up;
 }
 
-phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
-					phys_addr_t start, phys_addr_t end,
-					enum memblock_flags flags);
 phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
 				phys_addr_t max_addr);
 phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,

mm/cma.c

@@ -327,16 +327,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
 		 * memory in case of failure.
 		 */
 		if (base < highmem_start && limit > highmem_start) {
-			addr = memblock_alloc_range(size, alignment,
+			addr = memblock_phys_alloc_range(size, alignment,
-						    highmem_start, limit,
+							 highmem_start, limit);
-						    MEMBLOCK_NONE);
 			limit = highmem_start;
 		}
 
 		if (!addr) {
-			addr = memblock_alloc_range(size, alignment, base,
+			addr = memblock_phys_alloc_range(size, alignment, base,
-						    limit,
+							 limit);
-						    MEMBLOCK_NONE);
 			if (!addr) {
 				ret = -ENOMEM;
 				goto err;

mm/memblock.c

@@ -1281,12 +1281,13 @@ static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
 	return 0;
 }
 
-phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
+phys_addr_t __init memblock_phys_alloc_range(phys_addr_t size,
-					phys_addr_t start, phys_addr_t end,
+					     phys_addr_t align,
-					enum memblock_flags flags)
+					     phys_addr_t start,
+					     phys_addr_t end)
 {
 	return memblock_alloc_range_nid(size, align, start, end, NUMA_NO_NODE,
-					flags);
+					MEMBLOCK_NONE);
 }
 
 phys_addr_t __init memblock_phys_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)