Commit 100d4a9d authored Mar 15, 2011 by Mian Yousaf Kaukab Committed by Felipe Balbi Apr 13, 2011

usb: musb: clear AUTOSET while clearing DMAENAB

On the completion of tx dma, dma is disabled by clearing MUSB_TXCSR_DMAENAB in
TXCSR. If MUSB_TXCSR_AUTOSET was set in txstate() it will remain set although
it is not needed in PIO mode. Clear it as soon as it is not needed.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent 6221f222

drivers/usb/musb/musb_gadget.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -535,7 +535,7 @@ void musb_g_tx(struct musb *musb, u8 epnum)
		is_dma = 1;
		csr \|= MUSB_TXCSR_P_WZC_BITS;
		csr &= ~(MUSB_TXCSR_DMAENAB \| MUSB_TXCSR_P_UNDERRUN \|
		MUSB_TXCSR_TXPKTRDY);
		MUSB_TXCSR_TXPKTRDY \| MUSB_TXCSR_AUTOSET);
		musb_writew(epio, MUSB_TXCSR, csr);
		/* Ensure writebuffer is empty. */
		csr = musb_readw(epio, MUSB_TXCSR);