From: Joakim Zhang <qiangqing.zhang@nxp.com>
Date: Wed, 21 Oct 2020 02:45:27 +0800
Subject: can: flexcan: flexcan_remove(): disable wakeup completely

Git-commit: ab07ff1c92fa60f29438e655a1b4abab860ed0b6
Patch-mainline: v5.10-rc3
References: jsc#SLE-12251

With below sequence, we can see wakeup default is enabled after re-load module,
if it was enabled before, so we need disable wakeup in flexcan_remove().

| # cat /sys/bus/platform/drivers/flexcan/5a8e0000.can/power/wakeup
| disabled
| # echo enabled > /sys/bus/platform/drivers/flexcan/5a8e0000.can/power/wakeup
| # cat /sys/bus/platform/drivers/flexcan/5a8e0000.can/power/wakeup
| enabled
| # rmmod flexcan
| # modprobe flexcan
| # cat /sys/bus/platform/drivers/flexcan/5a8e0000.can/power/wakeup
| enabled

Fixes: de3578c198c6 ("can: flexcan: add self wakeup support")
Fixes: 915f9666421c ("can: flexcan: add support for DT property 'wakeup-source'")
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20201020184527.8190-1-qiangqing.zhang@nxp.com
[mkl: streamlined commit message]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
---
 drivers/net/can/flexcan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 06f94b6f0ebe..881799bd9c5e 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -2062,6 +2062,8 @@ static int flexcan_remove(struct platform_device *pdev)
 {
 	struct net_device *dev = platform_get_drvdata(pdev);
 
+	device_set_wakeup_enable(&pdev->dev, false);
+	device_set_wakeup_capable(&pdev->dev, false);
 	unregister_flexcandev(dev);
 	pm_runtime_disable(&pdev->dev);
 	free_candev(dev);
-- 
2.26.2