Messages in this thread Patch in this message | | | From | Doug Anderson <> | Subject | [PATCH 2/3] serial: samsung: don't check config for every character | Date | Mon, 21 Apr 2014 09:40:35 -0700 |
| |
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> --- drivers/tty/serial/samsung.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index a8e8b79..12442748 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); } -- 1.9.1.423.g4596e3a
| |