Evolution-X-Devices/kernel_google_redbull
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usb: core: Allow secondary event ring clean upon disconnect

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If device is disconnected in the middle of data transfer
there is a possibility of pending events in the secondary
event ring. As a result when xHC is halted as part of device
disconnect, device is not getting detected upon re-connect.
Fix the issue by acknowledging the pending events upon
device disconnect. Also this allows to finish the clean up
of event ring otherwise this results into a memory leak.

Change-Id: I2ec3d74867e0129dad395d1dbe920b468ac5949d
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar
2016-12-09 20:37:53 -08:00
parent 83c03ff240
commit c4d9817a3c
1 changed files with 0 additions and 3 deletions
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drivers/usb/core/usb.c
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@@ -838,9 +838,6 @@ EXPORT_SYMBOL(usb_sec_event_ring_setup);
int usb_sec_event_ring_cleanup(struct usb_device *dev,
unsigned int intr_num)
{
if (dev->state == USB_STATE_NOTATTACHED)
return 0;
return usb_hcd_sec_event_ring_cleanup(dev, intr_num);
}
EXPORT_SYMBOL(usb_sec_event_ring_cleanup);