4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Bich HEMON <[email protected]> [ 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: Bich Hemon <[email protected]> Signed-off-by: Marc Kleine-Budde <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/can/m_can/m_can.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -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( 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(s 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;
