diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-11-13 11:48:34 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-12-17 13:18:18 +0300 |
| commit | bdcb3826976e60204cce52470c01bb9541e547b3 (patch) | |
| tree | 612a89d2cc58ca885c2d2b6e7cbdc97f0c3ce1a6 /drivers/tty/serial/sh-sci.c | |
| parent | 495bb47c5dfe92bedce92fd5f3a3a0258d72ac36 (diff) | |
| download | linux-bdcb3826976e60204cce52470c01bb9541e547b3.tar.xz | |
serial: sh-sci: Drop unused frame_len parameter for sci_baud_calc_hscif()
As F is assumed to be zero in the receive margin formula, frame_len is
not used. Remove it, together with the sci_baud_calc_frame_len() helper
function.
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>
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 24 |
1 files changed, 3 insertions, 21 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 36077193f111..05ac15336e4f 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1866,26 +1866,9 @@ static unsigned int sci_scbrr_calc(struct sci_port *s, unsigned int bps, return DIV_ROUND_CLOSEST(freq, s->sampling_rate * bps) - 1; } -/* calculate frame length from SMR */ -static int sci_baud_calc_frame_len(unsigned int smr_val) -{ - int len = 10; - - if (smr_val & SCSMR_CHR) - len--; - if (smr_val & SCSMR_PE) - len++; - if (smr_val & SCSMR_STOP) - len++; - - return len; -} - - /* calculate sample rate, BRR, and clock select for HSCIF */ -static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq, - int *brr, unsigned int *srr, - unsigned int *cks, int frame_len) +static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq, int *brr, + unsigned int *srr, unsigned int *cks) { int sr, c, br, err, recv_margin; int min_err = 1000; /* 100% */ @@ -1987,9 +1970,8 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, baud = uart_get_baud_rate(port, termios, old, 0, max_baud); if (likely(baud && port->uartclk)) { if (s->cfg->type == PORT_HSCIF) { - int frame_len = sci_baud_calc_frame_len(smr_val); sci_baud_calc_hscif(baud, port->uartclk, &t, &srr, - &cks, frame_len); + &cks); } else { t = sci_scbrr_calc(s, baud, port->uartclk); for (cks = 0; t >= 256 && cks <= 3; cks++) |