Hugo Villeneuve wrote:
Round the serial port clock divisor value returned by calc_divisor()
Signed-off-by: Hugo Villeneuve hugo.villeneuve@lyrtech.com
Acked-by: Gerald Van Baren vanbaren@cideas.com
(Hopefully this stops Wolfgang's pain!)
drivers/serial/serial.c | 12 +++--------- 1 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c index 4ccaee2..8bbfcf9 100644 --- a/drivers/serial/serial.c +++ b/drivers/serial/serial.c @@ -124,8 +124,6 @@ static NS16550_t serial_ports[4] = {
static int calc_divisor (NS16550_t port) {
- uint32_t clk_divisor;
#ifdef CONFIG_OMAP1510 /* If can't cleanly clock 115200 set div to 1 */ if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) { @@ -149,15 +147,11 @@ static int calc_divisor (NS16550_t port)
/* Compute divisor value. Normally, we should simply return: * CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate
* but we need to round that value by adding 0.5 (2/4).
* but we need to round that value by adding 0.5.*/
- Rounding is especially important at high baud rates.
- clk_divisor = (((4 * CFG_NS16550_CLK) /
(MODE_X_DIV * gd->baudrate)) + 2) / 4;- debug("NS16550 clock divisor = %d\n", clk_divisor);
- return clk_divisor;
- return (CFG_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
(MODE_X_DIV * gd->baudrate);}
#if !defined(CONFIG_SERIAL_MULTI)
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