From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bich HEMON Subject: [PATCH] can: m_can: select pinctrl state in each suspend/resume function Date: Mon, 12 Mar 2018 08:52:37 +0000 Message-ID: <1520844745-5865-1-git-send-email-bich.hemon@st.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Cc: Bich HEMON To: Wolfgang Grandegger , Marc Kleine-Budde , Mario Huettel , Faiz Abbas , Quentin Schulz , Oliver Hartkopp , Franklin S Cooper Jr , Arnd Bergmann , "linux-can@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Make sure to apply the correct pin state in suspend/resume callbacks. Putting pins in sleep state saves power. Signed-off-by: Bich Hemon --- 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