usb: dwc3: gadget: don't clear EP_BUSY too early

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commit e18b7975c8 upstream.

In case of non-Isochronous transfers, we don't
want to clear DWC3_EP_BUSY flag until XferComplete
event. That's because XferInProgress was only enabled
so we can recycle TRBs and usb_requests quicker, but
there are still other pending requests being transferred.

In order to make sure we don't allow for another StartTransfer
command while the HW is still processing other transfers,
we must keep DWC3_EP_BUSY flag set and this what this patch
does.

Fixes: f3af36511e (usb: dwc3: gadget: always enable IOC on
	bulk/interrupt transfers)
Reported-by: sundeep subbaraya <sundeep.lkml@gmail.com>
Tested-by: sundeep subbaraya <sundeep.lkml@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Felipe Balbi 2015-05-29 10:06:38 -05:00 • committed by Greg Kroah-Hartman

parent f46bc2957e

commit 0343379cab

1 changed files with 5 additions and 1 deletions

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6

drivers/usb/dwc3/gadget.c

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