[V2,07/10] USB: OHCI: Properly handle ohci-platform suspend

Message ID 1371114989-2342-8-git-send-email-manjunath.goudar@linaro.org
State New
Headers show

Commit Message

manjunath.goudar@linaro.org June 13, 2013, 9:16 a.m.
Suspend scenario in case of ohci-platform glue was not
properly handled as it was not suspending generic part
of ohci controller.Calling explicitly the ohci_suspend()
routine in ohci_platform_suspend() will ensure proper
handling of suspend scenario.

V2:
 -Incase ohci_suspend() fails, return right away without
  executing further.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg KH <greg@kroah.com>
Cc: linux-usb@vger.kernel.org
---
 drivers/usb/host/ohci-platform.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

Patch

diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index bc30475..f91201b 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -139,14 +139,25 @@  static int ohci_platform_remove(struct platform_device *dev)
 
 static int ohci_platform_suspend(struct device *dev)
 {
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	struct usb_ohci_pdata *pdata = dev->platform_data;
 	struct platform_device *pdev =
 		container_of(dev, struct platform_device, dev);
+	bool do_wakeup = device_may_wakeup(dev);
+	int ret;
+
+	ret = ohci_suspend(hcd, do_wakeup);
+	if (ret == 0 && do_wakeup && HCD_WAKEUP_PENDING(hcd)) {
+		ohci_resume(hcd, false);
+		ret = -EBUSY;
+	}
+	if (ret)
+		return ret;
 
 	if (pdata->power_suspend)
 		pdata->power_suspend(pdev);
 
-	return 0;
+	return ret;
 }
 
 static int ohci_platform_resume(struct device *dev)