linux-kernel - [RFC 07/23] hwrng: omap - raw read and write endian fix

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Message-Id: <1384560086-11994-8-git-send-email-taras.kondratiuk@linaro.org>
Date:	Sat, 16 Nov 2013 02:01:10 +0200
From:	Taras Kondratiuk <taras.kondratiuk@...aro.org>
To:	linux-omap@...r.kernel.org
Cc:	linaro-networking@...aro.org,
	Victor Kamensky <victor.kamensky@...aro.org>,
	Deepak Saxena <dsaxena@...xity.net>,
	Matt Mackall <mpm@...enic.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	linux-kernel@...r.kernel.org
Subject: [RFC 07/23] hwrng: omap - raw read and write endian fix

From: Victor Kamensky <victor.kamensky@...aro.org>

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@...aro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@...aro.org>
---
 drivers/char/hw_random/omap-rng.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 9b89ff4..d68cf8a 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -131,13 +131,13 @@ struct omap_rng_dev {
 
 static inline u32 omap_rng_read(struct omap_rng_dev *priv, u16 reg)
 {
-	return __raw_readl(priv->base + priv->pdata->regs[reg]);
+	return readl_relaxed(priv->base + priv->pdata->regs[reg]);
 }
 
 static inline void omap_rng_write(struct omap_rng_dev *priv, u16 reg,
 				      u32 val)
 {
-	__raw_writel(val, priv->base + priv->pdata->regs[reg]);
+	writel_relaxed(val, priv->base + priv->pdata->regs[reg]);
 }
 
 static int omap_rng_data_present(struct hwrng *rng, int wait)
-- 
1.7.9.5

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