I2C: Fix i2c fail problem when a process is terminated by a signal onocteon in 3.8

From: 송은봉
Date: Tue Feb 26 2013 - 16:08:53 EST



I've been debugging the abnormal operation of i2c on octeon.
If a process is terminated by signal in the middle of i2c operation,
next i2c read operation which is done by another process was failed.
So i changed to ignore signal in the middle of i2c operation.
After that the problem was not reproduced.



Signed-off-by: EunBong Song <eunb.song@xxxxxxxxxxx>

diff -up drivers/i2c/busses/i2c-octeon.c{.orig,}
--- drivers/i2c/busses/i2c-octeon.c.orig 2013-02-21 08:09:03.168018843 -0800
+++ drivers/i2c/busses/i2c-octeon.c 2013-02-21 08:09:38.344018898 -0800
@@ -183,7 +183,7 @@ static irqreturn_t octeon_i2c_isr(int ir
struct octeon_i2c *i2c = dev_id;

octeon_i2c_int_disable(i2c);
- wake_up_interruptible(&i2c->queue);
+ wake_up(&i2c->queue);

return IRQ_HANDLED;
}
@@ -206,7 +206,7 @@ static int octeon_i2c_wait(struct octeon

octeon_i2c_int_enable(i2c);

- result = wait_event_interruptible_timeout(i2c->queue,
+ result = wait_event_timeout(i2c->queue,
octeon_i2c_test_iflg(i2c),
i2c->adap.timeout);

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