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can: flexcan: disable clocks during stop mode

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[ Upstream commit 02f71c6605e1f8259c07f16178330db766189a74 ]

Disable clocks while CAN core is in stop mode.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20191210085721.9853-2-qiangqing.zhang@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Joakim Zhang 2019-12-10 09:00:13 +00:00 committed by Greg Kroah-Hartman
parent 64129ad98b
commit 7551e2f4fd
1 changed files with 20 additions and 10 deletions
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30
drivers/net/can/flexcan.c
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@ -1703,8 +1703,6 @@ static int __maybe_unused flexcan_suspend(struct device *device)
err = flexcan_chip_disable(priv);
if (err)
return err;
err = pm_runtime_force_suspend(device);
}
netif_stop_queue(dev);
netif_device_detach(dev);
@ -1730,10 +1728,6 @@ static int __maybe_unused flexcan_resume(struct device *device)
if (err)
return err;
} else {
err = pm_runtime_force_resume(device);
if (err)
return err;
err = flexcan_chip_enable(priv);
}
}
@ -1764,8 +1758,16 @@ static int __maybe_unused flexcan_noirq_suspend(struct device *device)
struct net_device *dev = dev_get_drvdata(device);
struct flexcan_priv *priv = netdev_priv(dev);
if (netif_running(dev) && device_may_wakeup(device))
flexcan_enable_wakeup_irq(priv, true);
if (netif_running(dev)) {
int err;
if (device_may_wakeup(device))
flexcan_enable_wakeup_irq(priv, true);
err = pm_runtime_force_suspend(device);
if (err)
return err;
}
return 0;
}
@ -1775,8 +1777,16 @@ static int __maybe_unused flexcan_noirq_resume(struct device *device)
struct net_device *dev = dev_get_drvdata(device);
struct flexcan_priv *priv = netdev_priv(dev);
if (netif_running(dev) && device_may_wakeup(device))
flexcan_enable_wakeup_irq(priv, false);
if (netif_running(dev)) {
int err;
err = pm_runtime_force_resume(device);
if (err)
return err;
if (device_may_wakeup(device))
flexcan_enable_wakeup_irq(priv, false);
}
return 0;
}