[V4,07/11] USB: OHCI: Properly handle ohci-omap suspend

Message ID 1371720968-7533-8-git-send-email-manjunath.goudar@linaro.org
State Superseded
Headers show

Commit Message

manjunath.goudar@linaro.org June 20, 2013, 9:36 a.m.
Suspend scenario in case of ohci-omap glue was not
properly handled as it was not suspending generic part
of ohci controller. Calling explicitly the ohci_suspend()
routine in ohci_omap_suspend() will ensure proper
handling of suspend scenario.

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

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

V3:
 -Aligned variable "do_wakeup" and "ret".

V4:
 -The do_wakeup and ret variable alignment is removed.
---
 drivers/usb/host/ohci-omap.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 10ba58d..baefc46 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -432,16 +432,23 @@  static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
 
 #ifdef	CONFIG_PM
 
-static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
+static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
 {
-	struct ohci_hcd	*ohci = hcd_to_ohci(platform_get_drvdata(dev));
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	bool do_wakeup = device_may_wakeup(&pdev->dev);
+	int ret;
 
 	if (time_before(jiffies, ohci->next_statechange))
 		msleep(5);
 	ohci->next_statechange = jiffies;
 
+	ret = ohci_suspend(hcd, do_wakeup);
+	if (ret)
+		return ret;
+
 	omap_ohci_clock_power(0);
-	return 0;
+	return ret;
 }
 
 static int ohci_omap_resume(struct platform_device *dev)