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Commit ef4f9d4f authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Greg Kroah-Hartman
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pch_uart: Fix duplicate memory release issue 



Add initialize variable to prevent duplicate free memory.

Signed-off-by: default avatarTomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 04e2c2e3

drivers/tty/serial/pch_uart.c

+7 −4
Original line number Diff line number Diff line
@@ -656,10 +656,13 @@ static void pch_free_dma(struct uart_port *port) 
		dma_release_channel(priv->chan_rx);

		priv->chan_rx = NULL;

	}

	if (sg_dma_address(&priv->sg_rx))

		dma_free_coherent(port->dev, port->fifosize,

				  sg_virt(&priv->sg_rx),

				  sg_dma_address(&priv->sg_rx));



	if (priv->rx_buf_dma) {

		dma_free_coherent(port->dev, port->fifosize, priv->rx_buf_virt,

				  priv->rx_buf_dma);

		priv->rx_buf_virt = NULL;

		priv->rx_buf_dma = 0;

	}



	return;

}