Hello!
On 08.07.2019 5:25, Chen, Hu wrote:
On some Broxton NUC, the usb role is lost after S3 (it becomes "none").
Add PM callbacks to address this issue: save the role during suspend and
restore usb to that role during resume.
Test:
Run Android on UC6CAY, a NUC powered by Broxton. Access this NUC via
"adb shell" from a host PC. After a suspend/resume cycle, the adb still
works well.
Signed-off-by: Chen, Hu <hu1.chen@xxxxxxxxx>
Signed-off-by: Balaji <m.balaji@xxxxxxxxx>
diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c
index 277de96181f9..caa1cfab41cc 100644
--- a/drivers/usb/roles/intel-xhci-usb-role-switch.c
+++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c
[...]
@@ -167,6 +168,30 @@ static int intel_xhci_usb_remove(struct platform_device *pdev)
return 0;
}
+static int intel_xhci_usb_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct intel_xhci_usb_data *data = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+
+ data->role = intel_xhci_usb_get_role(dev);
Why not just pass &pdev->dev here?
+
+ return 0;
+}
+
[...]
MBR, Sergei
