Subject: [PATCH 11/26] parisc: remove __ioremap

From: Christoph Hellwig <[email-masked]>
Date: Sat, 17 Aug 2019 09:32:38 +0200

__ioremap is always called with the _PAGE_NO_CACHE, so fold the whole
thing and rename it to ioremap.  This allows allows to remove the
special EISA quirk to force _PAGE_NO_CACHE.

Signed-off-by: Christoph Hellwig <[email-masked]>
---
 arch/parisc/include/asm/io.h | 11 +----------
 arch/parisc/mm/ioremap.c     | 16 +++-------------
 2 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
index 93d37010b375..46212b52c23e 100644
--- a/arch/parisc/include/asm/io.h
+++ b/arch/parisc/include/asm/io.h
@@ -127,16 +127,7 @@ static inline void gsc_writeq(unsigned long long val, unsigned long addr)
 /*
  * The standard PCI ioremap interfaces
  */
-
-extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
-
-/* Most machines react poorly to I/O-space being cacheable... Instead let's
- * define ioremap() in terms of ioremap_nocache().
- */
-static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
-{
-	return __ioremap(offset, size, _PAGE_NO_CACHE);
-}
+void __iomem *ioremap(unsigned long offset, unsigned long size);
 #define ioremap_nocache(off, sz)	ioremap((off), (sz))
 #define ioremap_wc			ioremap_nocache
 #define ioremap_uc			ioremap_nocache
diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index 92a9b5f12f98..fe65e27f882b 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -25,23 +25,13 @@
  * have to convert them into an offset in a page-aligned mapping, but the
  * caller shouldn't need to know that small detail.
  */
-void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
+void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
 {
 	void __iomem *addr;
 	struct vm_struct *area;
 	unsigned long offset, last_addr;
 	pgprot_t pgprot;
 
-#ifdef CONFIG_EISA
-	unsigned long end = phys_addr + size - 1;
-	/* Support EISA addresses */
-	if ((phys_addr >= 0x00080000 && end < 0x000fffff) ||
-	    (phys_addr >= 0x00500000 && end < 0x03bfffff)) {
-		phys_addr |= F_EXTEND(0xfc000000);
-		flags |= _PAGE_NO_CACHE;
-	}
-#endif
-
 	/* Don't allow wraparound or zero size */
 	last_addr = phys_addr + size - 1;
 	if (!size || last_addr < phys_addr)
@@ -65,7 +55,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 	}
 
 	pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
-			  _PAGE_ACCESSED | flags);
+			  _PAGE_ACCESSED | _PAGE_NO_CACHE);
 
 	/*
 	 * Mappings have to be page-aligned
@@ -90,7 +80,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 
 	return (void __iomem *) (offset + (char __iomem *)addr);
 }
-EXPORT_SYMBOL(__ioremap);
+EXPORT_SYMBOL(ioremap);
 
 void iounmap(const volatile void __iomem *addr)
 {
-- 
2.20.1

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