staging: comedi: addi_common.h: remove 'b_AiContinuous' from private data

This member of the private data can be determined by checking the cmd->stop_src.
Do that instead.

Fix the b_AiContinuous check in apci3120_ai_cmd(). The (*do_cmdtest) validates
that the cmd->stop_arg os >= 1 for TRIG_COUNT and 0 for TRIG_NONE. The correct
test to set this flag is (cmd->stop_src == TRIG_NONE).

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/addi-data/addi_common.h b/drivers/staging/comedi/drivers/addi-data/addi_common.h
index 7471a0a..c55c5da 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/addi_common.h
+++ b/drivers/staging/comedi/drivers/addi-data/addi_common.h
@@ -118,7 +118,6 @@ struct addi_private {
        int i_IobaseAmcc;       /*  base+size for AMCC chip */
        int i_IobaseAddon;      /* addon base address */
        int i_IobaseReserved;
-       unsigned char b_AiContinuous;   /*  we do unlimited AI */
        unsigned int ui_AiActualScan;   /* how many scans we finished */
        unsigned int ui_AiNbrofChannels;        /*  how many channels is measured */
        unsigned int ui_AiChannelList[32];      /*  actual chanlist */

diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
index e4b9276..b978076 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
@@ -720,7 +720,6 @@ static int apci3120_cancel(struct comedi_device *dev,
        inw(dev->iobase + APCI3120_RD_STATUS);
        devpriv->ui_AiActualScan = 0;
        s->async->cur_chan = 0;
-       devpriv->b_AiContinuous = 0;
        devpriv->ui_DmaActualBuffer = 0;
 
        devpriv->b_AiCyclicAcquisition = APCI3120_DISABLE;
@@ -1038,7 +1037,7 @@ static int apci3120_cyclic_ai(int mode,
                outb(devpriv->b_ModeSelectRegister,
                        dev->iobase + APCI3120_WRITE_MODE_SELECT);
 
-               if (!devpriv->b_AiContinuous) {
+               if (cmd->stop_src == TRIG_COUNT) {
 /*
  * configure Timer2 For counting EOS Reset gate 2 of Timer 2 to
  * disable it (Set Bit D14 to 0)
@@ -1125,7 +1124,7 @@ static int apci3120_cyclic_ai(int mode,
                dmalen0 = devpriv->ui_DmaBufferSize[0];
                dmalen1 = devpriv->ui_DmaBufferSize[1];
 
-               if (!devpriv->b_AiContinuous) {
+               if (cmd->stop_src == TRIG_COUNT) {
                        /*
                         * Must we fill full first buffer? And must we fill
                         * full second buffer when first is once filled?
@@ -1294,8 +1293,8 @@ static int apci3120_cyclic_ai(int mode,
                /* END JK 07.05.04: Comparison between WIN32 and Linux driver */
        }
 
-       if ((devpriv->us_UseDma == APCI3120_DISABLE)
-               && !devpriv->b_AiContinuous) {
+       if (devpriv->us_UseDma == APCI3120_DISABLE &&
+           cmd->stop_src == TRIG_COUNT) {
                /*  set gate 2   to start conversion */
                devpriv->us_OutputRegister =
                        devpriv->us_OutputRegister | APCI3120_ENABLE_TIMER2;
@@ -1340,10 +1339,6 @@ static int apci3120_ai_cmd(struct comedi_device *dev,
        /* loading private structure with cmd structure inputs */
        devpriv->ui_AiNbrofChannels = cmd->chanlist_len;
 
-       if (cmd->stop_src == TRIG_NONE)
-               devpriv->b_AiContinuous = 1;    /*  user want neverending analog acquisition */
-       /*  stopped using cancel */
-
        if (cmd->start_src == TRIG_EXT)
                devpriv->b_ExttrigEnable = APCI3120_ENABLE;
        else
@@ -1481,7 +1476,7 @@ static void apci3120_interrupt_dma(int irq, void *d)
                        comedi_event(dev, s);
                }
        }
-       if (!devpriv->b_AiContinuous)
+       if (cmd->stop_src == TRIG_COUNT)
                if (devpriv->ui_AiActualScan >= cmd->stop_arg) {
                        /*  all data sampled */
                        apci3120_cancel(dev, s);