Re: [PATCH v3 2/3] i2c/at91: add support for system PM

From: Sergei Shtylyov
Date: Fri Oct 24 2014 - 09:03:01 EST


Hello.

On 10/24/2014 10:50 AM, Wenyou Yang wrote:

Signed-off-by: Wenyou Yang <wenyou.yang@xxxxxxxxx>
---
drivers/i2c/busses/i2c-at91.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index a25fb5e..6a84a2a 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -861,7 +861,33 @@ static int at91_twi_runtime_resume(struct device *dev)
[...]
+static int at91_twi_resume_noirq(struct device *dev)
+{
+ int ret;
+
+ if (!pm_runtime_status_suspended(dev)) {
+ ret = at91_twi_runtime_resume(dev);

Resume if *not* suspended?

+ if (ret)
+ return ret;
+ }
+
+ pm_runtime_mark_last_busy(dev);
+ pm_request_autosuspend(dev);
+
+ return 0;
+}
+
[...]

WBR, Sergei

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