linux-kernel - [PATCH 2/2] mips: mm: Discard ioremap_uncached

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Message-Id: <20180709135713.8083-2-fancer.lancer@gmail.com>
Date:   Mon,  9 Jul 2018 16:57:13 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     ralf@...ux-mips.org, paul.burton@...s.com, jhogan@...nel.org
Cc:     okaya@...eaurora.org, chenhc@...ote.com,
        Sergey.Semin@...latforms.ru, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org,
        Serge Semin <fancer.lancer@...il.com>, stable@...r.kernel.org
Subject: [PATCH 2/2] mips: mm: Discard ioremap_uncached_accelerated() method

Adaptive ioremap_wc() method is now available (see "mips: mm:
Create UCA-based ioremap_wc() method" commit). We can use it for
UCA-featured MMIO transactions in the kernel, so we don't need
it platform clone ioremap_uncached_accelerated() being declard.
Seeing it is also unused anywhere in the kernel code, lets remove
it from io.h arch-specific header then.

Signed-off-by: Serge Semin <fancer.lancer@...il.com>
Singed-off-by: Paul Burton <paul.burton@...s.com>
Cc: James Hogan <jhogan@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
Cc: stable@...r.kernel.org
---
 arch/mips/include/asm/io.h | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index babe5155a..360b7ddeb 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -301,15 +301,11 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
 	__ioremap_mode((offset), (size), boot_cpu_data.writecombine)
 
 /*
- * These two are MIPS specific ioremap variant.	 ioremap_cacheable_cow
- * requests a cachable mapping, ioremap_uncached_accelerated requests a
- * mapping using the uncached accelerated mode which isn't supported on
- * all processors.
+ * 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)
-#define ioremap_uncached_accelerated(offset, size)			\
-	__ioremap_mode((offset), (size), _CACHE_UNCACHED_ACCELERATED)
 
 static inline void iounmap(const volatile void __iomem *addr)
 {
-- 
2.12.0