[PATCH] can: m_can: select pinctrl state in each suspend/resume function
From: Bich HEMON <hidden>
Date: 2018-03-01 12:29:50
Also in:
linux-arm-kernel, linux-serial, lkml
Subsystem:
can network drivers, mcan device driver, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Markus Schneider-Pargmann, Linus Torvalds
Make sure to apply the correct pin state in suspend/resume callbacks. Putting pins in sleep state saves power. Signed-off-by: Bich Hemon <redacted> --- 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