Commit 05bb7013 authored Oct 31, 2011 by Yoshihiro Shimoda Committed by Greg Kroah-Hartman Nov 14, 2011

usb: gadget: r8a66597-udc: fix flush fifo handling



The "BCLR" in CFIFOCTR/DnFIFOCTR can flush the fifo of "CPU side" only.
To flush the fifo of "SIE side", we have to use the "ACLRM" in PIPEnCTR.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent b8cbbf80

drivers/usb/gadget/r8a66597-udc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1718,6 +1718,8 @@ static void r8a66597_fifo_flush(struct usb_ep *_ep)
		if (list_empty(&ep->queue) && !ep->busy) {
		pipe_stop(ep->r8a66597, ep->pipenum);
		r8a66597_bclr(ep->r8a66597, BCLR, ep->fifoctr);
		r8a66597_write(ep->r8a66597, ACLRM, ep->pipectr);
		r8a66597_write(ep->r8a66597, 0, ep->pipectr);
		}
		spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
		}

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