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[4.19,042/120] i2c: rcar: optimize cacheline to minimize HW race condition

Message ID 20210315135721.375066654@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH March 15, 2021, 1:56 p.m. UTC 
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

From: Wolfram Sang <wsa+renesas@sang-engineering.com>

[ Upstream commit 25c2e0fb5fefb8d7847214cf114d94c7aad8e9ce ]

'flags' and 'io' are needed first, so they should be at the beginning of
the private struct.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-rcar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index f9029800d399..3ea2ceec676c 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -117,6 +117,7 @@  enum rcar_i2c_type {
 };
 
 struct rcar_i2c_priv {
+	u32 flags;
 	void __iomem *io;
 	struct i2c_adapter adap;
 	struct i2c_msg *msg;
@@ -127,7 +128,6 @@  struct rcar_i2c_priv {
 
 	int pos;
 	u32 icccr;
-	u32 flags;
 	u8 recovery_icmcr;	/* protected by adapter lock */
 	enum rcar_i2c_type devtype;
 	struct i2c_client *slave;