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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2018-02-18 22:02:46 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-28 15:29:59 +0100 |
| commit | 42afa627c338e22bbde06c95bd7b46f960c91f79 (patch) | |
| tree | 81218297c50c973a6d2ece14aa98b38919022cb6 | |
| parent | 4238c00bb154be840c11540a81c5e99faa06a631 (diff) | |
| download | linux-42afa627c338e22bbde06c95bd7b46f960c91f79.tar.bz2 | |
serial: imx: drop check for enabled dma in .startup
imx_shutdown() calls imx_disable_dma if .dma_is_enabled. So after
imx_shudown() completes, .dma_is_enabled is zero. For this reason
.dma_is_enabled is also zero when imx_startup() is called. So the check
for this variable being zero can be dropped.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/imx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index c60ce00e701c..689a117943a0 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1257,7 +1257,7 @@ static int imx_startup(struct uart_port *port) writel(USR1_RTSD | USR1_DTRD, sport->port.membase + USR1); writel(USR2_ORE, sport->port.membase + USR2); - if (dma_is_inited && !sport->dma_is_enabled) + if (dma_is_inited) imx_enable_dma(sport); temp = readl(sport->port.membase + UCR1) & ~UCR1_RRDYEN; |