diff options
| author |   Fabio Estevam <fabio.estevam@freescale.com> | 2015-02-07 15:46:41 -0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-07 03:13:08 +0100 |
| commit | 4f86a95d75386b47178335599264a000601e01ed (patch) | |
| tree | ea224aabb64e03c8e01ddc9813a758ff83d9c25e /drivers/tty/serial/imx.c | |
| parent | tty: serial/bcm63xx_uart: fix sparse warning (diff) | |
| download | linux-dev-4f86a95d75386b47178335599264a000601e01ed.tar.xz linux-dev-4f86a95d75386b47178335599264a000601e01ed.zip | |
serial: imx: Do not store/restore the UBRC register
UBRC is a read-only register, so we should not store and restore it inside
imx_flush_buffer().
Reported-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 412bfbf8730b..ca00b3f1520f 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); } |