From b41b267dbd17a24657c9bac2150fc1f10061b522 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 10 Feb 2014 15:20:35 -0700 Subject: [PATCH] staging: comedi: das800: trigger sources are validated in (*do_cmdtest) The trigger sources were already validataed in the (*do_cmdtest) before the (*do_cmd) is called. Refactor the code in das800_ai_do_cmd() to use if/else instead of the switch since the default cases can never be reached. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/das800.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/drivers/staging/comedi/drivers/das800.c b/drivers/staging/comedi/drivers/das800.c index dbe94cea5905..8c15929811b6 100644 --- a/drivers/staging/comedi/drivers/das800.c +++ b/drivers/staging/comedi/drivers/das800.c @@ -420,17 +420,12 @@ static int das800_ai_do_cmd(struct comedi_device *dev, gain &= 0xf; outb(gain, dev->iobase + DAS800_GAIN); - switch (async->cmd.stop_src) { - case TRIG_COUNT: + if (async->cmd.stop_src == TRIG_COUNT) { devpriv->count = async->cmd.stop_arg * async->cmd.chanlist_len; devpriv->forever = false; - break; - case TRIG_NONE: + } else { /* TRIG_NONE */ devpriv->forever = true; devpriv->count = 0; - break; - default: - break; } /* enable auto channel scan, send interrupts on end of conversion @@ -440,19 +435,13 @@ static int das800_ai_do_cmd(struct comedi_device *dev, conv_bits |= EACS | IEOC; if (async->cmd.start_src == TRIG_EXT) conv_bits |= DTEN; - switch (async->cmd.convert_src) { - case TRIG_TIMER: + if (async->cmd.convert_src == TRIG_TIMER) { conv_bits |= CASC | ITE; /* set conversion frequency */ if (das800_set_frequency(dev) < 0) { comedi_error(dev, "Error setting up counters"); return -1; } - break; - case TRIG_EXT: - break; - default: - break; } spin_lock_irqsave(&dev->spinlock, irq_flags); -- 2.30.2