From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> UBRC is a read-only register, so we should not store and restore it inside imx_flush_buffer(). Reported-by: Fugang Duan <B38611@xxxxxxxxxxxxx> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> --- drivers/tty/serial/imx.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 0eb29b1..e8fe2cb 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1320,7 +1320,7 @@ static void imx_flush_buffer(struct uart_port *port) struct imx_port *sport = (struct imx_port *)port; struct scatterlist *sgl = &sport->tx_sgl[0]; unsigned long temp; - int i = 100, ubir, ubmr, ubrc, uts; + int i = 100, ubir, ubmr, uts; if (!sport->dma_chan_tx) return; @@ -1345,7 +1345,6 @@ static void imx_flush_buffer(struct uart_port *port) */ ubir = readl(sport->port.membase + UBIR); ubmr = readl(sport->port.membase + UBMR); - ubrc = readl(sport->port.membase + UBRC); uts = readl(sport->port.membase + IMX21_UTS); temp = readl(sport->port.membase + UCR2); @@ -1358,7 +1357,6 @@ static void imx_flush_buffer(struct uart_port *port) /* Restore the registers */ writel(ubir, sport->port.membase + UBIR); writel(ubmr, sport->port.membase + UBMR); - writel(ubrc, sport->port.membase + UBRC); writel(uts, sport->port.membase + IMX21_UTS); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
