diff options
| author | Doug Anderson <dianders@chromium.org> | 2014-04-21 20:40:35 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-25 02:38:21 +0400 |
| commit | ab88c8dc3bd667bcf21c8319165db92b930cf7e7 (patch) | |
| tree | 060c678b26d846eab33e1861862c0191e27e269f /drivers | |
| parent | bb7f09ba961dd43a2398975cc2d4ad0eb77ec865 (diff) | |
| download | linux-ab88c8dc3bd667bcf21c8319165db92b930cf7e7.tar.xz | |
serial: samsung: don't check config for every character
The s3c24xx_serial_console_putchar() is _only_ ever used by
s3c24xx_serial_console_write() and is called in a loop (indirectly
through uart_console_write()). There's no reason to call
s3c24xx_port_configured() for every iteration through the loop. Move
it outside the loop.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/samsung.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index a8e8b796f4f7..12442748d69f 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1464,11 +1464,6 @@ static void s3c24xx_serial_console_putchar(struct uart_port *port, int ch) { unsigned int ufcon = rd_regl(port, S3C2410_UFCON); - unsigned int ucon = rd_regl(port, S3C2410_UCON); - - /* not possible to xmit on unconfigured port */ - if (!s3c24xx_port_configured(ucon)) - return; while (!s3c24xx_serial_console_txrdy(port, ufcon)) barrier(); @@ -1479,6 +1474,12 @@ static void s3c24xx_serial_console_write(struct console *co, const char *s, unsigned int count) { + unsigned int ucon = rd_regl(cons_uart, S3C2410_UCON); + + /* not possible to xmit on unconfigured port */ + if (!s3c24xx_port_configured(ucon)) + return; + uart_console_write(cons_uart, s, count, s3c24xx_serial_console_putchar); } |