Thread (17 messages) 17 messages, 2 authors, 2015-07-14

[PATCH-v4 01/11] i2c: pxa: keep i2c irq ON in suspend

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From: Vaibhav Hiremath <hidden>
Date: 2015-07-14 07:39:14
Also in: linux-i2c, lkml
Subsystem: i2c subsystem, i2c subsystem host drivers, the rest · Maintainers: Andi Shyti, Linus Torvalds

Revision v4 of 4 in this series.

Revisions (4)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 [diff vs current]
  4. v4 current
From: Leilei Shang <redacted>

During suspend there may still be some i2c access happening, as the
interrupt is shared between multiple drivers.
And if we don't keep i2c irq ON, there may be i2c access timeout if
i2c is in irq mode of operation.

Signed-off-by: Raul Xiong <redacted>
Signed-off-by: Xiaofan Tian <redacted>
[vaibhav.hiremath@linaro.org: updated Changelog]
Signed-off-by: Vaibhav Hiremath <redacted>
Cc: Wolfram Sang <redacted>
---
 drivers/i2c/busses/i2c-pxa.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index d9c0d6a..f4ac8c5 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -1232,8 +1232,9 @@ static int i2c_pxa_probe(struct platform_device *dev)
 		i2c->adap.algo = &i2c_pxa_pio_algorithm;
 	} else {
 		i2c->adap.algo = &i2c_pxa_algorithm;
-		ret = request_irq(irq, i2c_pxa_handler, IRQF_SHARED,
-				  dev_name(&dev->dev), i2c);
+		ret = request_irq(irq, i2c_pxa_handler,
+				IRQF_SHARED | IRQF_NO_SUSPEND,
+				dev_name(&dev->dev), i2c);
 		if (ret)
 			goto ereqirq;
 	}
-- 
1.9.1
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