[PATCH] can: m_can: select pinctrl state in each suspend/resume function

From: Bich HEMON
Date: Thu Mar 01 2018 - 07:30:26 EST


Make sure to apply the correct pin state in suspend/resume callbacks.
Putting pins in sleep state saves power.

Signed-off-by: Bich Hemon <bich.hemon@xxxxxx>
---
drivers/net/can/m_can/m_can.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 2594f77..a86ef69 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -1700,6 +1700,8 @@ static __maybe_unused int m_can_suspend(struct device *dev)
m_can_clk_stop(priv);
}

+ pinctrl_pm_select_sleep_state(dev);
+
priv->can.state = CAN_STATE_SLEEPING;

return 0;
@@ -1710,6 +1712,8 @@ static __maybe_unused int m_can_resume(struct device *dev)
struct net_device *ndev = dev_get_drvdata(dev);
struct m_can_priv *priv = netdev_priv(ndev);

+ pinctrl_pm_select_default_state(dev);
+
m_can_init_ram(priv);

priv->can.state = CAN_STATE_ERROR_ACTIVE;
--
1.9.1