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Subject[PATCH V3 3/6] USB: OHCI: Properly handle ohci-s3c2410 suspend
Suspend scenario in case of ohci-s3c2410 glue was not
properly handled as it was not suspending generic part
of ohci controller. Alan Stern suggested, properly handle
ohci-s3c2410 suspend scenario.

Calling explicitly the ohci_suspend()
routine in ohci_hcd_s3c2410_drv_suspend() will ensure
proper handling of suspend scenario.

-No changes.
Due to the build failure on ep93xx reverted this patch.
This patch is needed as Alan Stern suggestion.

-No changes.
As a build failure on "ep93xx proper suspend patch" and Linaro
id bounced. Rewrote this patch on top of latest Greg usb-next
branch. This patch not gives any build error. Patch is required
for ohci-s3c2410 proper suspending as Alan mentioned.

Initially when I wrote this patch I was working in Linaro, now
I am not part of Linaro that is why Linaro id is bouncing. Sending
this patch from personal mail id.

Signed-off-by: Manjunath Goudar <>
Cc: Alan Stern <>
Cc: Greg KH <>
Cc: Ben Dooks <>
Cc: Kukjin Kim <>
drivers/usb/host/ohci-s3c2410.c | 21 ++++-----------------
1 file changed, 4 insertions(+), 17 deletions(-)

diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index be3429e..b5bf9b7 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -426,28 +426,15 @@ static int ohci_hcd_s3c2410_drv_remove(struct platform_device *pdev)
static int ohci_hcd_s3c2410_drv_suspend(struct device *dev)
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct platform_device *pdev = to_platform_device(dev);
- unsigned long flags;
+ bool do_wakeup = device_may_wakeup(dev);
int rc = 0;

- /*
- * Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible, bail out if RH has been resumed. Use
- * the spinlock to properly synchronize with possible pending
- * RH suspend or resume activity.
- */
- spin_lock_irqsave(&ohci->lock, flags);
- if (ohci->rh_state != OHCI_RH_SUSPENDED) {
- rc = -EINVAL;
- goto bail;
- }
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+ rc = ohci_suspend(hcd, do_wakeup);
+ if (rc)
+ return rc;

- spin_unlock_irqrestore(&ohci->lock, flags);

return rc;

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