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Commit 27eebf08 authored by Bich HEMON's avatar Bich HEMON Committed by Greg Kroah-Hartman
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can: m_can: select pinctrl state in each suspend/resume function 



[ Upstream commit c9b3bce18da4a0aebc27853052dea39aa64b7d75 ]

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

Signed-off-by: default avatarBich Hemon <bich.hemon@st.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 27fe367c

drivers/net/can/m_can/m_can.c

+5 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/platform_device.h>

#include <linux/iopoll.h>

#include <linux/can/dev.h>

#include <linux/pinctrl/consumer.h>



/* napi related */

#define M_CAN_NAPI_WEIGHT	64
@@ -1682,6 +1683,8 @@ 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;
@@ -1692,6 +1695,8 @@ 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;