staging: comedi: ni_mio_common: use cfc_handle_events()

The ni_event() function in this file is an open coded version of
cfc_handle_events() where instead of calling the subdevice (*cancel)
function a switch is used to call the function based on the subdevice
'index'.

Use the comedi_fc helper function to simplify the code.

This also allows removing a couple of the forward declarations.

Fix the #ifdef/#endif for the ni_gpct_cancel() foward declaration and
around the function. This function is now only referenced by code that
is blocked with #ifdef PCIDMA.

This source file is included by the ni_atmio, ni_mio_cs, and ni_pcimio
drivers. In the Kconfig, the config options for these drivers already
select COMEDI_FC.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 3a86d482babdff13732e3194d6ed259b0962de86..8a0e3b7236ad8d06de8f7e01bc4ac03a9022f92f 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -256,7 +256,6 @@ static int ni_rtsi_insn_config(struct comedi_device *dev,
 static void caldac_setup(struct comedi_device *dev, struct comedi_subdevice *s);
 static int ni_read_eeprom(struct comedi_device *dev, int addr);
 
-static int ni_ai_reset(struct comedi_device *dev, struct comedi_subdevice *s);
 #ifndef PCIDMA
 static void ni_handle_fifo_half_full(struct comedi_device *dev);
 static int ni_ao_fifo_half_empty(struct comedi_device *dev,
@@ -272,15 +271,12 @@ static void shutdown_ai_command(struct comedi_device *dev);
 static int ni_ao_inttrig(struct comedi_device *dev, struct comedi_subdevice *s,
                         unsigned int trignum);
 
-static int ni_ao_reset(struct comedi_device *dev, struct comedi_subdevice *s);
-
 static int ni_8255_callback(int dir, int port, int data, unsigned long arg);
 
 #ifdef PCIDMA
 static int ni_gpct_cmd(struct comedi_device *dev, struct comedi_subdevice *s);
+static int ni_gpct_cancel(struct comedi_device *dev, struct comedi_subdevice *s);
 #endif
-static int ni_gpct_cancel(struct comedi_device *dev,
-                         struct comedi_subdevice *s);
 static void handle_gpct_interrupt(struct comedi_device *dev,
                                  unsigned short counter_index);
 
@@ -947,32 +943,6 @@ static void shutdown_ai_command(struct comedi_device *dev)
        s->async->events |= COMEDI_CB_EOA;
 }
 
-static void ni_event(struct comedi_device *dev, struct comedi_subdevice *s)
-{
-       if (s->
-           async->events & (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW |
-                            COMEDI_CB_EOA)) {
-               switch (s->index) {
-               case NI_AI_SUBDEV:
-                       ni_ai_reset(dev, s);
-                       break;
-               case NI_AO_SUBDEV:
-                       ni_ao_reset(dev, s);
-                       break;
-               case NI_GPCT0_SUBDEV:
-               case NI_GPCT1_SUBDEV:
-                       ni_gpct_cancel(dev, s);
-                       break;
-               case NI_DIO_SUBDEV:
-                       ni_cdio_cancel(dev, s);
-                       break;
-               default:
-                       break;
-               }
-       }
-       comedi_event(dev, s);
-}
-
 static void handle_gpct_interrupt(struct comedi_device *dev,
                                  unsigned short counter_index)
 {
@@ -984,8 +954,7 @@ static void handle_gpct_interrupt(struct comedi_device *dev,
 
        ni_tio_handle_interrupt(&devpriv->counter_dev->counters[counter_index],
                                s);
-       if (s->async->events)
-               ni_event(dev, s);
+       cfc_handle_events(dev, s);
 #endif
 }
 
@@ -1043,7 +1012,7 @@ static void handle_a_interrupt(struct comedi_device *dev, unsigned short status,
                        if (comedi_is_subdevice_running(s)) {
                                s->async->events |=
                                    COMEDI_CB_ERROR | COMEDI_CB_EOA;
-                               ni_event(dev, s);
+                               cfc_handle_events(dev, s);
                        }
                        return;
                }
@@ -1058,8 +1027,7 @@ static void handle_a_interrupt(struct comedi_device *dev, unsigned short status,
                        if (status & (AI_Overrun_St | AI_Overflow_St))
                                s->async->events |= COMEDI_CB_OVERFLOW;
 
-                       ni_event(dev, s);
-
+                       cfc_handle_events(dev, s);
                        return;
                }
                if (status & AI_SC_TC_St) {
@@ -1086,7 +1054,7 @@ static void handle_a_interrupt(struct comedi_device *dev, unsigned short status,
        if ((status & AI_STOP_St))
                ni_handle_eos(dev, s);
 
-       ni_event(dev, s);
+       cfc_handle_events(dev, s);
 }
 
 static void ack_b_interrupt(struct comedi_device *dev, unsigned short b_status)
@@ -1161,7 +1129,7 @@ static void handle_b_interrupt(struct comedi_device *dev,
        }
 #endif
 
-       ni_event(dev, s);
+       cfc_handle_events(dev, s);
 }
 
 #ifndef PCIDMA
@@ -3672,7 +3640,7 @@ static void handle_cdio_interrupt(struct comedi_device *dev)
                          M_Offset_CDIO_Command);
                /* s->async->events |= COMEDI_CB_EOA; */
        }
-       ni_event(dev, s);
+       cfc_handle_events(dev, s);
 }
 
 static int ni_serial_insn_config(struct comedi_device *dev,
@@ -5008,9 +4976,9 @@ static int ni_gpct_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 }
 #endif
 
+#ifdef PCIDMA
 static int ni_gpct_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
-#ifdef PCIDMA
        struct ni_gpct *counter = s->private;
        int retval;
 
@@ -5018,10 +4986,8 @@ static int ni_gpct_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
        ni_e_series_enable_second_irq(dev, counter->counter_index, 0);
        ni_release_gpct_mite_channel(dev, counter->counter_index);
        return retval;
-#else
-       return 0;
-#endif
 }
+#endif
 
 /*
  *