powerpc/mm: drop function __ioremap()

__ioremap() is not used anymore, drop it.
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ccc439f481a0884e00a6be1bab44bab2a4477fea.1566309262.git.christophe.leroy@c-s.fr

arch/powerpc/include/asm/io.h

@@ -705,10 +705,6 @@ static inline void iosync(void)
  *   create hand-made mappings for use only by the PCI code and cannot
  *   currently be hooked. Must be page aligned.
  *
- * * __ioremap is the low level implementation used by ioremap and
- *   ioremap_prot and cannot be hooked (but can be used by a hook on one
- *   of the previous ones)
- *
  * * __ioremap_caller is the same as above but takes an explicit caller
  *   reference rather than using __builtin_return_address(0)
  *
@@ -726,8 +722,6 @@ void __iomem *ioremap_coherent(phys_addr_t address, unsigned long size);
 
 extern void iounmap(volatile void __iomem *addr);
 
-extern void __iomem *__ioremap(phys_addr_t, unsigned long size,
-			       unsigned long flags);
 extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size,
 				      pgprot_t prot, void *caller);
 

arch/powerpc/mm/pgtable_32.c

@@ -91,12 +91,6 @@ ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags)
 }
 EXPORT_SYMBOL(ioremap_prot);
 
-void __iomem *
-__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
-{
-	return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0));
-}
-
 void __iomem *
 __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *caller)
 {
@@ -127,8 +121,8 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *call
 	 */
 	if (slab_is_available() && p <= virt_to_phys(high_memory - 1) &&
 	    page_is_ram(__phys_to_pfn(p))) {
-		printk("__ioremap(): phys addr 0x%llx is RAM lr %ps\n",
-		       (unsigned long long)p, __builtin_return_address(0));
+		pr_warn("%s(): phys addr 0x%llx is RAM lr %ps\n", __func__,
+			(unsigned long long)p, __builtin_return_address(0));
 		return NULL;
 	}
 #endif
@@ -171,7 +165,6 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *call
 out:
 	return (void __iomem *) (v + ((unsigned long)addr & ~PAGE_MASK));
 }
-EXPORT_SYMBOL(__ioremap);
 
 void iounmap(volatile void __iomem *addr)
 {

arch/powerpc/mm/pgtable_64.c

@@ -203,12 +203,6 @@ void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size,
 	return ret;
 }
 
-void __iomem * __ioremap(phys_addr_t addr, unsigned long size,
-			 unsigned long flags)
-{
-	return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0));
-}
-
 void __iomem * ioremap(phys_addr_t addr, unsigned long size)
 {
 	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
@@ -286,7 +280,6 @@ void iounmap(volatile void __iomem *token)
 EXPORT_SYMBOL(ioremap);
 EXPORT_SYMBOL(ioremap_wc);
 EXPORT_SYMBOL(ioremap_prot);
-EXPORT_SYMBOL(__ioremap);
 EXPORT_SYMBOL(__ioremap_at);
 EXPORT_SYMBOL(iounmap);
 EXPORT_SYMBOL(__iounmap_at);