linux-kernel - [PATCH] mips: mm: Discard ioremap_cacheable

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Message-Id: <20180720201427.18845-1-fancer.lancer@gmail.com>
Date:   Fri, 20 Jul 2018 23:14:27 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     paul.burton@...s.com, jhogan@...nel.org, ralf@...ux-mips.org
Cc:     hch@...radead.org, okaya@...eaurora.org, chenhc@...ote.com,
        Sergey.Semin@...latforms.ru, linux-kernel@...r.kernel.org,
        Serge Semin <fancer.lancer@...il.com>,
        linux-mips@...ux-mips.org
Subject: [PATCH] mips: mm: Discard ioremap_cacheable_cow() method

This macro substitution is the shortcut to map cacheable IO memory
with coherent and write-back attributes. Since it is entirely unused
by kernel, lets just remove it.

Signed-off-by: Serge Semin <fancer.lancer@...il.com>
Suggested-by: Christoph Hellwig <hch@...radead.org>
CC: Paul Burton <paul.burton@...s.com>
Cc: James Hogan <jhogan@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Sinan Kaya <okaya@...eaurora.org>
Cc: Huacai Chen <chenhc@...ote.com>
Cc: Sergey.Semin@...latforms.ru
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
---
 arch/mips/include/asm/io.h | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index f613d1df66c0..cd170d920d55 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -300,13 +300,6 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
 #define ioremap_wc(offset, size)					\
 	__ioremap_mode((offset), (size), boot_cpu_data.writecombine)
 
-/*
- * This is a MIPS specific ioremap variant. ioremap_cacheable_cow
- * requests a cachable mapping with CWB attribute enabled.
- */
-#define ioremap_cacheable_cow(offset, size)				\
-	__ioremap_mode((offset), (size), _CACHE_CACHABLE_COW)
-
 static inline void iounmap(const volatile void __iomem *addr)
 {
 	if (plat_iounmap(addr))
-- 
2.12.0