linux-kernel - [PATCH 1/2] mtd: atmel_nand: use __iowrite32

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Message-Id: <1413821173-18347-1-git-send-email-vinod.koul@intel.com>
Date:	Mon, 20 Oct 2014 21:36:12 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	Josh Wu <Josh.wu@...el.com>, Jingoo Han <jg1.han@...sung.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Mark Brown <broonie@...aro.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Herve Codina <Herve.CODINA@...ad.com>,
	Bo Shen <voice.shen@...el.com>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michael Grzeschik <m.grzeschik@...gutronix.de>,
	Josh Triplett <josh@...htriplett.org>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Huang Shijie <shijie8@...il.com>,
	Michael Opdenacker <michael.opdenacker@...e-electrons.com>,
	Vinod Koul <vinod.koul@...el.com>
Subject: [PATCH 1/2] mtd: atmel_nand: use __iowrite32_copy for 32 bit copy

The driver was also using own method to do 32bit copy, turns out
we have a kernel API so use that instead

Signed-off-by: Vinod Koul <vinod.koul@...el.com>
---
 drivers/mtd/nand/atmel_nand.c |   10 +++-------
 1 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index e321c56..b03e80d 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -265,14 +265,10 @@ static void memcpy32_fromio(void *trg, const void __iomem  *src, size_t size)
 		*t++ = readl_relaxed(s++);
 }
 
-static void memcpy32_toio(void __iomem *trg, const void *src, int size)
+static inline void memcpy32_toio(void __iomem *trg, const void *src, int size)
 {
-	int i;
-	u32 __iomem *t = trg;
-	const u32 *s = src;
-
-	for (i = 0; i < (size >> 2); i++)
-		writel_relaxed(*s++, t++);
+	/* __iowrite32_copy use 32bit size values so divide by 4 */
+	__iowrite32_copy(trg, src, size/4);
 }
 
 /*
-- 
1.7.0.4

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