linux-kernel - [PATCH 4.2 09/30] net: dsa: bcm_sf2: Fix 64-bits register writes

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Message-Id: <20151001092038.602421505@linuxfoundation.org>
Date:	Thu,  1 Oct 2015 11:21:31 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.2 09/30] net: dsa: bcm_sf2: Fix 64-bits register writes

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Florian Fainelli <f.fainelli@...il.com>

[ Upstream commit 03679a14739a0d4c14b52ba65a69ff553bfba73b ]

The macro to write 64-bits quantities to the 32-bits register swapped
the value and offsets arguments, we want to preserve the ordering of the
arguments with respect to how writel() is implemented for instance:
value first, offset/base second.

Fixes: 246d7f773c13 ("net: dsa: add Broadcom SF2 switch driver")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Reviewed-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/dsa/bcm_sf2.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/dsa/bcm_sf2.h
+++ b/drivers/net/dsa/bcm_sf2.h
@@ -112,8 +112,8 @@ static inline u64 name##_readq(struct bc
 	spin_unlock(&priv->indir_lock);					\
 	return (u64)indir << 32 | dir;					\
 }									\
-static inline void name##_writeq(struct bcm_sf2_priv *priv, u32 off,	\
-							u64 val)	\
+static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val,	\
+							u32 off)	\
 {									\
 	spin_lock(&priv->indir_lock);					\
 	reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE);	\


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