提交 b5e890f7 编写于 作者: V Virupax Sadashivpetimath 提交者: Ben Dooks

i2c-nomadik: remove the unnecessary delay

The delay in the driver seems to be not needed, so remove it.
Signed-off-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: NMarkus Grape <markus.grape@stericsson.com>
Tested-by: NPer Persson <per.xb.persson@stericsson.com>
Tested-by: NChethan Krishna N <chethan.krishna@stericsson.com>
Reviewed-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
上级 55355341
......@@ -15,7 +15,6 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
......@@ -105,9 +104,6 @@
/* maximum threshold value */
#define MAX_I2C_FIFO_THRESHOLD 15
/* per-transfer delay, required for the hardware to stabilize */
#define I2C_DELAY 150
enum i2c_status {
I2C_NOP,
I2C_ON_GOING,
......@@ -269,12 +265,6 @@ static int init_hw(struct nmk_i2c_dev *dev)
dev->cli.operation = I2C_NO_OPERATION;
exit:
/*
* TODO: What is this delay for?
* Must be pretty pointless since the hw block
* is frozen. Or?
*/
udelay(I2C_DELAY);
return stat;
}
......@@ -652,7 +642,6 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
break;
}
udelay(I2C_DELAY);
}
if (status == 0)
break;
......@@ -778,13 +767,8 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
}
}
i2c_set_bit(dev->virtbase + I2C_ICR, I2C_IT_MTD);
i2c_set_bit(dev->virtbase + I2C_ICR, I2C_IT_MTDWS);
disable_interrupts(dev,
(I2C_IT_TXFNE | I2C_IT_TXFE | I2C_IT_TXFF
| I2C_IT_TXFOVR | I2C_IT_RXFNF
| I2C_IT_RXFF | I2C_IT_RXFE));
disable_all_interrupts(dev);
clear_all_interrupts(dev);
if (dev->cli.count) {
dev->result = -EIO;
......
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