From 0427c4847ef2d9f6babbc9167687a606e7533c19 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 13 Nov 2012 17:52:40 -0700 Subject: [PATCH] staging: comedi: amplc_pci224: use cfc_check_trigger_arg_*() helpers Use the new helpers in the step 3 tests of pci224_ao_cmdtest(). Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/amplc_pci224.c | 53 ++++++------------- 1 file changed, 16 insertions(+), 37 deletions(-) diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c index e997f6e446d7..0b901d5d2694 100644 --- a/drivers/staging/comedi/drivers/amplc_pci224.c +++ b/drivers/staging/comedi/drivers/amplc_pci224.c @@ -757,76 +757,58 @@ pci224_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, if (err) return 2; - /* Step 3: make sure arguments are trivially compatible. */ + /* Step 3: check if arguments are trivially valid */ switch (cmd->start_src) { case TRIG_INT: - if (cmd->start_arg != 0) { - cmd->start_arg = 0; - err++; - } + err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); break; case TRIG_EXT: /* Force to external trigger 0. */ if ((cmd->start_arg & ~CR_FLAGS_MASK) != 0) { cmd->start_arg = COMBINE(cmd->start_arg, 0, ~CR_FLAGS_MASK); - err++; + err |= -EINVAL; } /* The only flag allowed is CR_EDGE, which is ignored. */ if ((cmd->start_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) { cmd->start_arg = COMBINE(cmd->start_arg, 0, CR_FLAGS_MASK & ~CR_EDGE); - err++; + err |= -EINVAL; } break; } switch (cmd->scan_begin_src) { case TRIG_TIMER: - if (cmd->scan_begin_arg > MAX_SCAN_PERIOD) { - cmd->scan_begin_arg = MAX_SCAN_PERIOD; - err++; - } + err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, + MAX_SCAN_PERIOD); + tmp = cmd->chanlist_len * CONVERT_PERIOD; if (tmp < MIN_SCAN_PERIOD) tmp = MIN_SCAN_PERIOD; - - if (cmd->scan_begin_arg < tmp) { - cmd->scan_begin_arg = tmp; - err++; - } + err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg, tmp); break; case TRIG_EXT: /* Force to external trigger 0. */ if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) { cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, ~CR_FLAGS_MASK); - err++; + err |= -EINVAL; } /* Only allow flags CR_EDGE and CR_INVERT. Ignore CR_EDGE. */ if ((cmd->scan_begin_arg & CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT)) != 0) { cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, - CR_FLAGS_MASK & ~(CR_EDGE - | - CR_INVERT)); - err++; + CR_FLAGS_MASK & + ~(CR_EDGE | CR_INVERT)); + err |= -EINVAL; } break; } - /* cmd->convert_src == TRIG_NOW */ - if (cmd->convert_arg != 0) { - cmd->convert_arg = 0; - err++; - } - - /* cmd->scan_end_arg == TRIG_COUNT */ - if (cmd->scan_end_arg != cmd->chanlist_len) { - cmd->scan_end_arg = cmd->chanlist_len; - err++; - } + err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); + err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); switch (cmd->stop_src) { case TRIG_COUNT: @@ -837,7 +819,7 @@ pci224_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, if ((cmd->stop_arg & ~CR_FLAGS_MASK) != 0) { cmd->stop_arg = COMBINE(cmd->stop_arg, 0, ~CR_FLAGS_MASK); - err++; + err |= -EINVAL; } /* The only flag allowed is CR_EDGE, which is ignored. */ if ((cmd->stop_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) { @@ -846,10 +828,7 @@ pci224_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, } break; case TRIG_NONE: - if (cmd->stop_arg != 0) { - cmd->stop_arg = 0; - err++; - } + err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); break; } -- 2.34.1