From: Rajat Jain <rajatja@google.com>
To: Jarkko Nikula <jarkko.nikula@linux.intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Wolfram Sang <wsa@the-dreams.de>,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
Lee Jones <lee.jones@linaro.org>,
"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-pm@vger.kernel.org, Len Brown <len.brown@intel.com>,
furquan@google.com, rajatxjain@gmail.com
Cc: Rajat Jain <rajatja@google.com>
Subject: [PATCH 1/2] i2c: designware: switch to suspend_late/resume_early
Date: Wed, 20 Sep 2017 15:31:51 -0700 [thread overview]
Message-ID: <20170920223152.100641-1-rajatja@google.com> (raw)
Ref: https://lkml.org/lkml/2017/9/19/649
The bus controllers should suspend the bus operations only after
all of the devices on the bus have suspended their device
completely. Since the i2c_client drivers could be talking to
their devices in their suspend_late() calls, lets ensure that the
bus is alive by that time. Thus moving the controller suspend logic to
suspend_late().
Signed-off-by: Rajat Jain <rajatja@google.com>
---
drivers/i2c/busses/i2c-designware-platdrv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 0e65b97842b4..66dd7f844c40 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -468,7 +468,7 @@ static int dw_i2c_plat_suspend(struct device *dev)
static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
.prepare = dw_i2c_plat_prepare,
.complete = dw_i2c_plat_complete,
- SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend,
dw_i2c_plat_resume,
NULL)
--
2.14.1.821.g8fa685d3b7-goog
next reply other threads:[~2017-09-20 22:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 22:31 Rajat Jain [this message]
2017-09-20 22:31 ` [PATCH 2/2] mfd: intel-lpss: switch to suspend_late()/resume_early() Rajat Jain
2017-09-21 0:27 ` Rafael J. Wysocki
2017-09-21 1:14 ` Rajat Jain
2017-09-21 8:41 ` Lee Jones
2017-09-21 14:10 ` Rafael J. Wysocki
2017-09-21 15:17 ` Lee Jones
2017-09-21 15:18 ` Rafael J. Wysocki
2017-09-20 22:42 ` [PATCH 1/2] i2c: designware: switch to suspend_late/resume_early Rajat Jain
2017-09-21 0:24 ` Rafael J. Wysocki
2017-09-21 1:13 ` Rajat Jain
2017-09-21 14:11 ` Rafael J. Wysocki
2017-09-23 12:55 ` Rafael J. Wysocki
2017-09-23 15:49 ` Rajat Jain
2017-09-23 16:17 ` Rajat Jain
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