[MIPS] prom_free_prom_memory cleanup

Current prom_free_prom_memory() implementations are almost same as
free_init_pages(), or no-op.  Make free_init_pages() extern (again)
and make prom_free_prom_memory() use it.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

31 files changed, 44 insertions, 114 deletions

diff --git a/arch/mips/arc/memory.c b/arch/mips/arc/memory.c
index 8a9ef58cc399..456cb81a32d9 100644
--- a/arch/mips/arc/memory.c
+++ b/arch/mips/arc/memory.c
@@ -141,30 +141,20 @@ void __init prom_meminit(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        unsigned long freed = 0;
         unsigned long addr;
         int i;
 
         if (prom_flags & PROM_FLAG_DONT_FREE_TEMP)
-                return 0;
+                return;
 
         for (i = 0; i < boot_mem_map.nr_map; i++) {
                 if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
                         continue;
 
                 addr = boot_mem_map.map[i].addr;
-                while (addr < boot_mem_map.map[i].addr
-                              + boot_mem_map.map[i].size) {
-                        ClearPageReserved(virt_to_page(__va(addr)));
-                        init_page_count(virt_to_page(__va(addr)));
-                        free_page((unsigned long)__va(addr));
-                        addr += PAGE_SIZE;
-                        freed += PAGE_SIZE;
-                }
+                free_init_pages("prom memory",
+                                addr, addr + boot_mem_map.map[i].size);
         }
-        printk(KERN_INFO "Freeing prom memory: %ldkb freed\n", freed >> 10);
-
-        return freed;
 }
diff --git a/arch/mips/au1000/common/prom.c b/arch/mips/au1000/common/prom.c
index 6fce60af005d..a8637cdb5b4b 100644
--- a/arch/mips/au1000/common/prom.c
+++ b/arch/mips/au1000/common/prom.c
@@ -149,9 +149,8 @@ int get_ethernet_addr(char *ethernet_addr)
         return 0;
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 EXPORT_SYMBOL(prom_getcmdline);
diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
index e8f0f20b852d..a4b69b543bd9 100644
--- a/arch/mips/cobalt/setup.c
+++ b/arch/mips/cobalt/setup.c
@@ -204,8 +204,7 @@ void __init prom_init(void)
         add_memory_region(0x0, memsz, BOOT_MEM_RAM);
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
         /* Nothing to do! */
-        return 0;
 }
diff --git a/arch/mips/ddb5xxx/common/prom.c b/arch/mips/ddb5xxx/common/prom.c
index efef0f57ce1e..54a857b5e3ba 100644
--- a/arch/mips/ddb5xxx/common/prom.c
+++ b/arch/mips/ddb5xxx/common/prom.c
@@ -59,9 +59,8 @@ void __init prom_init(void)
 #endif
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 #if defined(CONFIG_DDB5477)
diff --git a/arch/mips/dec/prom/memory.c b/arch/mips/dec/prom/memory.c
index 3aa01d268f2d..5a557e268f78 100644
--- a/arch/mips/dec/prom/memory.c
+++ b/arch/mips/dec/prom/memory.c
@@ -92,9 +92,9 @@ void __init prom_meminit(u32 magic)
                 rex_setup_memory_region();
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        unsigned long addr, end;
+        unsigned long end;
 
         /*
          * Free everything below the kernel itself but leave
@@ -114,16 +114,5 @@ unsigned long __init prom_free_prom_memory(void)
 #endif
                 end = __pa(&_text);
 
-        addr = PAGE_SIZE;
-        while (addr < end) {
-                ClearPageReserved(virt_to_page(__va(addr)));
-                init_page_count(virt_to_page(__va(addr)));
-                free_page((unsigned long)__va(addr));
-                addr += PAGE_SIZE;
-        }
-
-        printk("Freeing unused PROM memory: %ldkb freed\n",
-               (end - PAGE_SIZE) >> 10);
-
-        return end - PAGE_SIZE;
+        free_init_pages("unused PROM memory", PAGE_SIZE, end);
 }
diff --git a/arch/mips/gt64120/ev64120/setup.c b/arch/mips/gt64120/ev64120/setup.c
index 99c8d42212e2..477848c22a2c 100644
--- a/arch/mips/gt64120/ev64120/setup.c
+++ b/arch/mips/gt64120/ev64120/setup.c
@@ -59,9 +59,8 @@ extern void galileo_machine_power_off(void);
  */
 extern struct pci_ops galileo_pci_ops;
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 /*
diff --git a/arch/mips/gt64120/momenco_ocelot/prom.c b/arch/mips/gt64120/momenco_ocelot/prom.c
index 8677b6d3ada7..78f393b2afd9 100644
--- a/arch/mips/gt64120/momenco_ocelot/prom.c
+++ b/arch/mips/gt64120/momenco_ocelot/prom.c
@@ -67,7 +67,6 @@ void __init prom_init(void)
         add_memory_region(0, 64 << 20, BOOT_MEM_RAM);
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/gt64120/wrppmc/setup.c b/arch/mips/gt64120/wrppmc/setup.c
index 429afc400cb4..121188d5ec4a 100644
--- a/arch/mips/gt64120/wrppmc/setup.c
+++ b/arch/mips/gt64120/wrppmc/setup.c
@@ -93,9 +93,8 @@ void __init wrppmc_early_printk(const char *fmt, ...)
 }
 #endif /* WRPPMC_EARLY_DEBUG */
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 #ifdef CONFIG_SERIAL_8250
diff --git a/arch/mips/jmr3927/common/prom.c b/arch/mips/jmr3927/common/prom.c
index 5d5838f41d23..aa481b774c42 100644
--- a/arch/mips/jmr3927/common/prom.c
+++ b/arch/mips/jmr3927/common/prom.c
@@ -75,7 +75,6 @@ void  __init prom_init_cmdline(void)
         *cp = '\0';
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/lasat/prom.c b/arch/mips/lasat/prom.c
index 88c7ab871ec4..d47692f73a26 100644
--- a/arch/mips/lasat/prom.c
+++ b/arch/mips/lasat/prom.c
@@ -132,9 +132,8 @@ void __init prom_init(void)
         add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 const char *get_system_type(void)
diff --git a/arch/mips/mips-boards/generic/memory.c b/arch/mips/mips-boards/generic/memory.c
index eeed944e0f83..ebf0e16c5a0d 100644
--- a/arch/mips/mips-boards/generic/memory.c
+++ b/arch/mips/mips-boards/generic/memory.c
@@ -166,9 +166,8 @@ void __init prom_meminit(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        unsigned long freed = 0;
         unsigned long addr;
         int i;
 
@@ -176,17 +175,8 @@ unsigned long __init prom_free_prom_memory(void)
                 if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
                         continue;
 
-                addr = PAGE_ALIGN(boot_mem_map.map[i].addr);
-                while (addr < boot_mem_map.map[i].addr
-                              + boot_mem_map.map[i].size) {
-                        ClearPageReserved(virt_to_page(__va(addr)));
-                        init_page_count(virt_to_page(__va(addr)));
-                        free_page((unsigned long)__va(addr));
-                        addr += PAGE_SIZE;
-                        freed += PAGE_SIZE;
-                }
+                addr = boot_mem_map.map[i].addr;
+                free_init_pages("prom memory",
+                                addr, addr + boot_mem_map.map[i].size);
         }
-        printk("Freeing prom memory: %ldkb freed\n", freed >> 10);
-
-        return freed;
 }
diff --git a/arch/mips/mips-boards/sim/sim_mem.c b/arch/mips/mips-boards/sim/sim_mem.c
index f7ce76983328..46bc16f8b15d 100644
--- a/arch/mips/mips-boards/sim/sim_mem.c
+++ b/arch/mips/mips-boards/sim/sim_mem.c
@@ -99,10 +99,9 @@ void __init prom_meminit(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
         int i;
-        unsigned long freed = 0;
         unsigned long addr;
 
         for (i = 0; i < boot_mem_map.nr_map; i++) {
@@ -110,16 +109,7 @@ unsigned long __init prom_free_prom_memory(void)
                         continue;
 
                 addr = boot_mem_map.map[i].addr;
-                while (addr < boot_mem_map.map[i].addr
-                              + boot_mem_map.map[i].size) {
-                        ClearPageReserved(virt_to_page(__va(addr)));
-                        init_page_count(virt_to_page(__va(addr)));
-                        free_page((unsigned long)__va(addr));
-                        addr += PAGE_SIZE;
-                        freed += PAGE_SIZE;
-                }
+                free_init_pages("prom memory",
+                                addr, addr + boot_mem_map.map[i].size);
         }
-        printk("Freeing prom memory: %ldkb freed\n", freed >> 10);
-
-        return freed;
 }
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 49065c133ebf..fb427dbfe71e 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -467,7 +467,7 @@ void __init mem_init(void)
 }
 #endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
-static void free_init_pages(char *what, unsigned long begin, unsigned long end)
+void free_init_pages(const char *what, unsigned long begin, unsigned long end)
 {
         unsigned long pfn;
 
@@ -493,17 +493,9 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 }
 #endif
 
-extern unsigned long prom_free_prom_memory(void);
-
 void free_initmem(void)
 {
-        unsigned long freed;
-
-        freed = prom_free_prom_memory();
-        if (freed)
-                printk(KERN_INFO "Freeing firmware memory: %ldkb freed\n",
-                       freed >> 10);
-
+        prom_free_prom_memory();
         free_init_pages("unused kernel memory",
                         __pa_symbol(&__init_begin),
                         __pa_symbol(&__init_end));
diff --git a/arch/mips/momentum/jaguar_atx/prom.c b/arch/mips/momentum/jaguar_atx/prom.c
index 3d2712929293..66371ffa2196 100644
--- a/arch/mips/momentum/jaguar_atx/prom.c
+++ b/arch/mips/momentum/jaguar_atx/prom.c
@@ -235,9 +235,8 @@ void __init prom_init(void)
 #endif
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
diff --git a/arch/mips/momentum/ocelot_3/prom.c b/arch/mips/momentum/ocelot_3/prom.c
index 6ce9b7fdb824..8e02df63578a 100644
--- a/arch/mips/momentum/ocelot_3/prom.c
+++ b/arch/mips/momentum/ocelot_3/prom.c
@@ -180,9 +180,8 @@ void __init prom_init(void)
 #endif
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
diff --git a/arch/mips/momentum/ocelot_c/prom.c b/arch/mips/momentum/ocelot_c/prom.c
index d0b77e101d74..b689ceea8cfb 100644
--- a/arch/mips/momentum/ocelot_c/prom.c
+++ b/arch/mips/momentum/ocelot_c/prom.c
@@ -178,7 +178,6 @@ void __init prom_init(void)
 #endif
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/momentum/ocelot_g/prom.c b/arch/mips/momentum/ocelot_g/prom.c
index 2f75c6b91ec5..836d0830720d 100644
--- a/arch/mips/momentum/ocelot_g/prom.c
+++ b/arch/mips/momentum/ocelot_g/prom.c
@@ -79,7 +79,6 @@ void __init prom_init(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/philips/pnx8550/common/prom.c b/arch/mips/philips/pnx8550/common/prom.c
index eb6ec11fef07..8aeed6c2b8c3 100644
--- a/arch/mips/philips/pnx8550/common/prom.c
+++ b/arch/mips/philips/pnx8550/common/prom.c
@@ -106,9 +106,8 @@ int get_ethernet_addr(char *ethernet_addr)
         return 0;
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 extern int pnx8550_console_port;
diff --git a/arch/mips/pmc-sierra/yosemite/prom.c b/arch/mips/pmc-sierra/yosemite/prom.c
index 9fe4973377c3..1e1685e415a4 100644
--- a/arch/mips/pmc-sierra/yosemite/prom.c
+++ b/arch/mips/pmc-sierra/yosemite/prom.c
@@ -132,9 +132,8 @@ void __init prom_init(void)
         prom_grab_secondary();
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
diff --git a/arch/mips/qemu/q-mem.c b/arch/mips/qemu/q-mem.c
index d174fac43031..dae39b59de15 100644
--- a/arch/mips/qemu/q-mem.c
+++ b/arch/mips/qemu/q-mem.c
@@ -1,6 +1,5 @@
 #include <linux/init.h>
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0UL;
 }
diff --git a/arch/mips/sgi-ip22/ip22-mc.c b/arch/mips/sgi-ip22/ip22-mc.c
index b58bd522262b..ddb6506d8341 100644
--- a/arch/mips/sgi-ip22/ip22-mc.c
+++ b/arch/mips/sgi-ip22/ip22-mc.c
@@ -202,7 +202,6 @@ void __init sgimc_init(void)
 }
 
 void __init prom_meminit(void) {}
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index 16e5682b01f1..0e3d535e9f43 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -498,10 +498,9 @@ void __init prom_meminit(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
         /* We got nothing to free here ...  */
-        return 0;
 }
 
 extern void pagetable_init(void);
diff --git a/arch/mips/sgi-ip32/ip32-memory.c b/arch/mips/sgi-ip32/ip32-memory.c
index d37d40a3cdae..849d392a0013 100644
--- a/arch/mips/sgi-ip32/ip32-memory.c
+++ b/arch/mips/sgi-ip32/ip32-memory.c
@@ -43,7 +43,6 @@ void __init prom_meminit (void)
 }
 
 
-unsigned long __init prom_free_prom_memory (void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
diff --git a/arch/mips/sibyte/cfe/setup.c b/arch/mips/sibyte/cfe/setup.c
index 6e8952da6e2a..9e6099e69622 100644
--- a/arch/mips/sibyte/cfe/setup.c
+++ b/arch/mips/sibyte/cfe/setup.c
@@ -343,10 +343,9 @@ void __init prom_init(void)
         prom_meminit();
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
         /* Not sure what I'm supposed to do here.  Nothing, I think */
-        return 0;
 }
 
 void prom_putchar(char c)
diff --git a/arch/mips/sibyte/sb1250/prom.c b/arch/mips/sibyte/sb1250/prom.c
index 3c33a4517bc3..257c4e674353 100644
--- a/arch/mips/sibyte/sb1250/prom.c
+++ b/arch/mips/sibyte/sb1250/prom.c
@@ -87,10 +87,9 @@ void __init prom_init(void)
         prom_meminit();
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
         /* Not sure what I'm supposed to do here.  Nothing, I think */
-        return 0;
 }
 
 void prom_putchar(char c)
diff --git a/arch/mips/sni/sniprom.c b/arch/mips/sni/sniprom.c
index d1d0f1f493b4..1213d166f22e 100644
--- a/arch/mips/sni/sniprom.c
+++ b/arch/mips/sni/sniprom.c
@@ -67,9 +67,8 @@ void prom_printf(char *fmt, ...)
         va_end(args);
 }
 
-unsigned long prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 /*
diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_prom.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_prom.c
index efe50562f0ce..9a3a5babd1fb 100644
--- a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_prom.c
+++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_prom.c
@@ -80,9 +80,8 @@ void __init prom_init(void)
         add_memory_region(0, msize << 20, BOOT_MEM_RAM);
 }
 
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 const char *get_system_type(void)
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/prom.c b/arch/mips/tx4938/toshiba_rbtx4938/prom.c
index e44daf30a7c1..7dc6a0aae21c 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/prom.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/prom.c
@@ -56,9 +56,8 @@ void __init prom_init(void)
         return;
 }
 
-unsigned long  __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
 {
-        return 0;
 }
 
 void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
diff --git a/arch/mips/vr41xx/common/init.c b/arch/mips/vr41xx/common/init.c
index a2e285c1d4d5..4f97e0ba9e24 100644
--- a/arch/mips/vr41xx/common/init.c
+++ b/arch/mips/vr41xx/common/init.c
@@ -81,7 +81,6 @@ void __init prom_init(void)
         }
 }
 
-unsigned long __init prom_free_prom_memory (void)
+void __init prom_free_prom_memory(void)
 {
-        return 0UL;
 }
diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h
index 8e321f53a382..c7c945baf1ee 100644
--- a/include/asm-mips/bootinfo.h
+++ b/include/asm-mips/bootinfo.h
@@ -243,6 +243,10 @@ extern struct boot_mem_map boot_mem_map;
 extern void add_memory_region(phys_t start, phys_t size, long type);
 
 extern void prom_init(void);
+extern void prom_free_prom_memory(void);
+
+extern void free_init_pages(const char *what,
+                            unsigned long begin, unsigned long end);
 
 /*
  * Initial kernel command line, usually setup by prom_init()
diff --git a/include/asm-mips/mips-boards/prom.h b/include/asm-mips/mips-boards/prom.h
index 4168c7fcd43e..7bf6f5f6ab9c 100644
--- a/include/asm-mips/mips-boards/prom.h
+++ b/include/asm-mips/mips-boards/prom.h
@@ -33,7 +33,6 @@ extern void prom_printf(char *fmt, ...);
 extern void prom_init_cmdline(void);
 extern void prom_meminit(void);
 extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
-extern unsigned long prom_free_prom_memory (void);
 extern void mips_display_message(const char *str);
 extern void mips_display_word(unsigned int num);
 extern int get_ethernet_addr(char *ethernet_addr);