In order to avoid "spurious irq" caused by CP polling mode,
enable irq at the entry of i2c_pxa_xfer() fn and disable it
again before exit.
Also disable it before exiting probe function.
Signed-off-by: Jett.Zhou <jtzhou@xxxxxxxxxxx>
[vaibhav.hiremath@xxxxxxxxxx: Split & merge patches into logical changes
and update the Changelog]
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@xxxxxxxxxx>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@xxxxxxxxxx>
---
drivers/i2c/busses/i2c-pxa.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 3c6ebb5..a3ac97c 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -1163,6 +1163,7 @@ static int i2c_pxa_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num
struct pxa_i2c *i2c = adap->algo_data;
int ret, i;
+ enable_irq(i2c->irq);
for (i = adap->retries; i >= 0; i--) {
ret = i2c_pxa_do_xfer(i2c, msgs, num);
if (ret != I2C_RETRY)
@@ -1176,6 +1177,7 @@ static int i2c_pxa_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num
ret = -EREMOTEIO;
out:
i2c_pxa_set_slave(i2c, ret);
+ disable_irq(i2c->irq);
return ret;
}
@@ -1363,6 +1365,8 @@ static int i2c_pxa_probe(struct platform_device *dev)
i2c_pxa_reset(i2c);
+ disable_irq(i2c->irq);
+
i2c->adap.algo_data = i2c;
i2c->adap.dev.parent = &dev->dev;
#ifdef CONFIG_OF
--
1.9.1
--
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