[PATCH AUTOSEL 5.10 02/47] i2c: rcar: optimize cacheline to minimize HW race condition

Sasha Levin
2021-03-02T16:07:12Z

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(-)

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 824586d7ee56..ad6630e3cc77 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -119,6 +119,7 @@ enum rcar_i2c_type {
};

struct rcar_i2c_priv {
+ u32 flags;
void __iomem *io;
struct i2c_adapter adap;
struct i2c_msg *msg;
@@ -129,7 +130,6 @@ 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;
--
2.30.1