From: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Date: Fri, 13 May 2011 10:30:53 +0000 (+0200)
Subject: i2c-nomadik: reset the hw after status check
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0511f643cbe6990daf4b53b1268b5c2ea28d1733;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

i2c-nomadik: reset the hw after status check

In case of I2C timeout, reset the HW only after the HW status
is read, otherwise the staus will be lost.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index b2de1a56dc8..fa7b10639ce 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -428,10 +428,9 @@ static int read_i2c(struct nmk_i2c_dev *dev)
 	}
 
 	if (timeout == 0) {
-		/* controller has timedout, re-init the h/w */
+		/* Controller timed out */
 		dev_err(&dev->pdev->dev, "read from slave 0x%x timed out\n",
 				dev->cli.slave_adr);
-		(void) init_hw(dev);
 		status = -ETIMEDOUT;
 	}
 	return status;
@@ -516,10 +515,9 @@ static int write_i2c(struct nmk_i2c_dev *dev)
 	}
 
 	if (timeout == 0) {
-		/* controller has timedout, re-init the h/w */
+		/* Controller timed out */
 		dev_err(&dev->pdev->dev, "write to slave 0x%x timed out\n",
 				dev->cli.slave_adr);
-		(void) init_hw(dev);
 		status = -ETIMEDOUT;
 	}
 
@@ -638,6 +636,8 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
 						abort_causes[cause]);
 				}
 
+				(void) init_hw(dev);
+
 				status = status ? status : dev->result;
 
 				break;