serial: sh-sci: Drop useless check for zero sampling_rate

sci_port.sampling_rate is always non-zero, except for HSCIF, which uses
sci_baud_calc_hscif() instead of sci_scbrr_calc().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 7 deletions

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index cc6fa55231ba..dfee7a2f51f1 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1863,13 +1863,7 @@ static void sci_shutdown(struct uart_port *port)
 static unsigned int sci_scbrr_calc(struct sci_port *s, unsigned int bps,
                                    unsigned long freq)
 {
-        if (s->sampling_rate)
-                return DIV_ROUND_CLOSEST(freq, s->sampling_rate * bps) - 1;
-
-        /* Warn, but use a safe default */
-        WARN_ON(1);
-
-        return ((freq + 16 * bps) / (32 * bps) - 1);
+        return DIV_ROUND_CLOSEST(freq, s->sampling_rate * bps) - 1;
 }
 
 /* calculate frame length from SMR */