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Message-Id: <1244635716-23315-10-git-send-email-os@emlix.com> Date: Wed, 10 Jun 2009 14:08:36 +0200 From: "Oskar Schirmer" <os@...ix.com> To: Sascha Hauer <kernel@...gutronix.de> Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Alan Cox <alan@...rguk.ukuu.org.uk>, Oskar Schirmer <os@...ix.com> Subject: [PATCH 9/9 -v2] imx: serial: use tty_encode_baud_rate to set true rate real baud rate may be different from the one requested. for upper layers, set the nearest value to the real rate in favour of the rate previously requested. Signed-off-by: Oskar Schirmer <os@...ix.com> --- drivers/serial/imx.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 1c00e2a..c367160 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -818,6 +818,7 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8; unsigned int div, ufcr; unsigned long num, denom; + uint64_t tdiv64; /* * If we don't support modem control lines, don't allow @@ -930,6 +931,12 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, rational_best_approximation(16 * div * baud, sport->port.uartclk, 1 << 16, 1 << 16, &num, &denom); + tdiv64 = sport->port.uartclk; + tdiv64 *= num; + do_div(tdiv64, denom * 16 * div); + tty_encode_baud_rate(sport->port.info->port.tty, + (speed_t)tdiv64, (speed_t)tdiv64); + num -= 1; denom -= 1; -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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