patches.baytrail/1118-I2C-mv64xxx-remove-I2C_M_NOSTART-code.patch

From 73134a0a348af0575ed388efe272d27eeccc43f4 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 16 May 2013 21:37:11 +0100
Subject: I2C: mv64xxx: remove I2C_M_NOSTART code

As this driver does not advertise protocol mangling support
(I2C_FUNC_PROTOCOL_MANGLING is not set), having code to act on
I2C_M_NOSTART is illogical, and in any case isn't supportable on
anything but the first message - which makes no sense.  Remove
the I2C_M_NOSTART code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
(cherry picked from commit aa6bce5319a54c050af26e095287472854abccfd)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/i2c/busses/i2c-mv64xxx.c | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 4b45c7363501..f11cb25c3295 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -419,28 +419,12 @@ mv64xxx_i2c_execute_msg(struct mv64xxx_i2c_data *drv_data, struct i2c_msg *msg,
 	spin_lock_irqsave(&drv_data->lock, flags);
 	mv64xxx_i2c_prepare_for_io(drv_data, msg);
 
-	if (unlikely(msg->flags & I2C_M_NOSTART)) { /* Skip start/addr phases */
-		if (drv_data->msg->flags & I2C_M_RD) {
-			/* No action to do, wait for slave to send a byte */
-			drv_data->action = MV64XXX_I2C_ACTION_CONTINUE;
-			drv_data->state =
-				MV64XXX_I2C_STATE_WAITING_FOR_SLAVE_DATA;
-		} else {
-			drv_data->action = MV64XXX_I2C_ACTION_SEND_DATA;
-			drv_data->state =
-				MV64XXX_I2C_STATE_WAITING_FOR_SLAVE_ACK;
-			drv_data->bytes_left--;
-		}
+	if (is_first) {
+		drv_data->action = MV64XXX_I2C_ACTION_SEND_START;
+		drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_START_COND;
 	} else {
-		if (is_first) {
-			drv_data->action = MV64XXX_I2C_ACTION_SEND_START;
-			drv_data->state =
-				MV64XXX_I2C_STATE_WAITING_FOR_START_COND;
-		} else {
-			drv_data->action = MV64XXX_I2C_ACTION_SEND_ADDR_1;
-			drv_data->state =
-				MV64XXX_I2C_STATE_WAITING_FOR_ADDR_1_ACK;
-		}
+		drv_data->action = MV64XXX_I2C_ACTION_SEND_ADDR_1;
+		drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_ADDR_1_ACK;
 	}
 
 	drv_data->send_stop = is_last;
-- 
1.8.5.rc3