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Commit c25a1ad7 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Greg Kroah-Hartman
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serial: pl011: fix fall back from DMA to interrupt mode 



When falling back from DMA to interrupt mode the receive interrupt has to
be re-enabled to catch new incoming data.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 30ae5859

drivers/tty/serial/amba-pl011.c

+2 −0
Original line number Diff line number Diff line
@@ -967,6 +967,8 @@ static void pl011_dma_rx_poll(unsigned long args) 


		spin_lock_irqsave(&uap->port.lock, flags);

		pl011_dma_rx_stop(uap);

		uap->im |= UART011_RXIM;

		writew(uap->im, uap->port.membase + UART011_IMSC);

		spin_unlock_irqrestore(&uap->port.lock, flags);



		uap->dmarx.running = false;