[PATCH] can: flexcan: disable transceiver during system PM

[haibo . chen]

From: Haibo Chen <haibo.chen@xxxxxxx>

During system PM, if no wakeup requirement, disable transceiver to
save power.

Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
 drivers/net/can/flexcan/flexcan-core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexcan/flexcan-core.c
index b347a1c93536..74f3137295fb 100644
--- a/drivers/net/can/flexcan/flexcan-core.c
+++ b/drivers/net/can/flexcan/flexcan-core.c
@@ -2292,6 +2292,7 @@ static int __maybe_unused flexcan_suspend(struct device *device)
 				return err;
 
 			flexcan_chip_interrupts_disable(dev);
+			flexcan_transceiver_disable(priv);
 
 			err = pinctrl_pm_select_sleep_state(device);
 			if (err)
@@ -2325,6 +2326,10 @@ static int __maybe_unused flexcan_resume(struct device *device)
 			if (err)
 				return err;
 
+			err = flexcan_transceiver_enable(priv);
+			if (err)
+				return err;
+
 			err = flexcan_chip_start(dev);
 			if (err)
 				return err;
-- 
2.34.1