staging: comedi: vmk80xx: remove need for boardinfo in private_data

The only information in the boardinfo that is used outside of the
attach of the driver is the 'model' of the device.

Remove the 'board' pointer from the private data and replace it with
the 'model' enum and just copy that information over during the attach.

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

diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c
index 6ed70ee..80864a7 100644 (file)
--- a/drivers/staging/comedi/drivers/vmk80xx.c
+++ b/drivers/staging/comedi/drivers/vmk80xx.c
@@ -202,7 +202,6 @@ struct vmk80xx_private {
        struct usb_endpoint_descriptor *ep_tx;
        struct usb_anchor rx_anchor;
        struct usb_anchor tx_anchor;
-       const struct vmk80xx_board *board;
        struct firmware_version fw;
        struct semaphore limit_sem;
        wait_queue_head_t read_wait;
@@ -210,6 +209,7 @@ struct vmk80xx_private {
        unsigned char *usb_rx_buf;
        unsigned char *usb_tx_buf;
        unsigned long flags;
+       enum vmk80xx_model model;
 };
 
 static void vmk80xx_tx_callback(struct urb *urb)
@@ -423,7 +423,6 @@ static void vmk80xx_do_bulk_msg(struct vmk80xx_private *devpriv)
 
 static int vmk80xx_read_packet(struct vmk80xx_private *devpriv)
 {
-       const struct vmk80xx_board *boardinfo = devpriv->board;
        unsigned long *flags = &devpriv->flags;
        struct urb *urb;
        int retval;
@@ -437,7 +436,7 @@ static int vmk80xx_read_packet(struct vmk80xx_private *devpriv)
                                             !test_bit(TRANS_IN_BUSY, flags)))
                        return -ERESTART;
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                vmk80xx_do_bulk_msg(devpriv);
 
                return 0;
@@ -470,7 +469,6 @@ exit:
 
 static int vmk80xx_write_packet(struct vmk80xx_private *devpriv, int cmd)
 {
-       const struct vmk80xx_board *boardinfo = devpriv->board;
        unsigned long *flags = &devpriv->flags;
        struct urb *urb;
        int retval;
@@ -483,7 +481,7 @@ static int vmk80xx_write_packet(struct vmk80xx_private *devpriv, int cmd)
                                             !test_bit(TRANS_OUT_BUSY, flags)))
                        return -ERESTART;
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                devpriv->usb_tx_buf[0] = cmd;
                vmk80xx_do_bulk_msg(devpriv);
 
@@ -539,7 +537,6 @@ static int vmk80xx_ai_rinsn(struct comedi_device *dev,
                            struct comedi_subdevice *s,
                            struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        int chan;
        int reg[2];
@@ -552,7 +549,7 @@ static int vmk80xx_ai_rinsn(struct comedi_device *dev,
        down(&devpriv->limit_sem);
        chan = CR_CHAN(insn->chanspec);
 
-       switch (boardinfo->model) {
+       switch (devpriv->model) {
        case VMK8055_MODEL:
                if (!chan)
                        reg[0] = VMK8055_AI1_REG;
@@ -572,7 +569,7 @@ static int vmk80xx_ai_rinsn(struct comedi_device *dev,
                if (vmk80xx_read_packet(devpriv))
                        break;
 
-               if (boardinfo->model == VMK8055_MODEL) {
+               if (devpriv->model == VMK8055_MODEL) {
                        data[n] = devpriv->usb_rx_buf[reg[0]];
                        continue;
                }
@@ -591,7 +588,6 @@ static int vmk80xx_ao_winsn(struct comedi_device *dev,
                            struct comedi_subdevice *s,
                            struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        int chan;
        int cmd;
@@ -605,7 +601,7 @@ static int vmk80xx_ao_winsn(struct comedi_device *dev,
        down(&devpriv->limit_sem);
        chan = CR_CHAN(insn->chanspec);
 
-       switch (boardinfo->model) {
+       switch (devpriv->model) {
        case VMK8055_MODEL:
                cmd = VMK8055_CMD_WRT_AD;
                if (!chan)
@@ -668,7 +664,6 @@ static int vmk80xx_di_bits(struct comedi_device *dev,
                           struct comedi_subdevice *s,
                           struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        unsigned char *rx_buf;
        int reg;
@@ -682,7 +677,7 @@ static int vmk80xx_di_bits(struct comedi_device *dev,
 
        rx_buf = devpriv->usb_rx_buf;
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                reg = VMK8061_DI_REG;
                devpriv->usb_tx_buf[0] = VMK8061_CMD_RD_DI;
        } else {
@@ -692,7 +687,7 @@ static int vmk80xx_di_bits(struct comedi_device *dev,
        retval = vmk80xx_read_packet(devpriv);
 
        if (!retval) {
-               if (boardinfo->model == VMK8055_MODEL)
+               if (devpriv->model == VMK8055_MODEL)
                        data[1] = (((rx_buf[reg] >> 4) & 0x03) |
                                  ((rx_buf[reg] << 2) & 0x04) |
                                  ((rx_buf[reg] >> 3) & 0x18));
@@ -711,7 +706,6 @@ static int vmk80xx_di_rinsn(struct comedi_device *dev,
                            struct comedi_subdevice *s,
                            struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        int chan;
        unsigned char *rx_buf;
@@ -728,7 +722,7 @@ static int vmk80xx_di_rinsn(struct comedi_device *dev,
 
        rx_buf = devpriv->usb_rx_buf;
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                reg = VMK8061_DI_REG;
                devpriv->usb_tx_buf[0] = VMK8061_CMD_RD_DI;
        } else {
@@ -738,7 +732,7 @@ static int vmk80xx_di_rinsn(struct comedi_device *dev,
                if (vmk80xx_read_packet(devpriv))
                        break;
 
-               if (boardinfo->model == VMK8055_MODEL)
+               if (devpriv->model == VMK8055_MODEL)
                        inp = (((rx_buf[reg] >> 4) & 0x03) |
                               ((rx_buf[reg] << 2) & 0x04) |
                               ((rx_buf[reg] >> 3) & 0x18));
@@ -757,7 +751,6 @@ static int vmk80xx_do_winsn(struct comedi_device *dev,
                            struct comedi_subdevice *s,
                            struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        int chan;
        unsigned char *tx_buf;
@@ -775,7 +768,7 @@ static int vmk80xx_do_winsn(struct comedi_device *dev,
        tx_buf = devpriv->usb_tx_buf;
 
        for (n = 0; n < insn->n; n++) {
-               if (boardinfo->model == VMK8055_MODEL) {
+               if (devpriv->model == VMK8055_MODEL) {
                        reg = VMK8055_DO_REG;
                        cmd = VMK8055_CMD_WRT_AD;
                        if (data[n] == 1)
@@ -838,7 +831,6 @@ static int vmk80xx_do_bits(struct comedi_device *dev,
                           struct comedi_subdevice *s,
                           struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        unsigned char *rx_buf, *tx_buf;
        int dir, reg, cmd;
@@ -849,7 +841,7 @@ static int vmk80xx_do_bits(struct comedi_device *dev,
        if (data[0])
                dir |= DIR_OUT;
 
-       if (boardinfo->model == VMK8061_MODEL)
+       if (devpriv->model == VMK8061_MODEL)
                dir |= DIR_IN;
 
        retval = rudimentary_check(devpriv, dir);
@@ -862,7 +854,7 @@ static int vmk80xx_do_bits(struct comedi_device *dev,
        tx_buf = devpriv->usb_tx_buf;
 
        if (data[0]) {
-               if (boardinfo->model == VMK8055_MODEL) {
+               if (devpriv->model == VMK8055_MODEL) {
                        reg = VMK8055_DO_REG;
                        cmd = VMK8055_CMD_WRT_AD;
                } else { /* VMK8061_MODEL */
@@ -879,7 +871,7 @@ static int vmk80xx_do_bits(struct comedi_device *dev,
                        goto out;
        }
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                reg = VMK8061_DO_REG;
                tx_buf[0] = VMK8061_CMD_RD_DO;
 
@@ -904,7 +896,6 @@ static int vmk80xx_cnt_rinsn(struct comedi_device *dev,
                             struct comedi_subdevice *s,
                             struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        int chan;
        int reg[2];
@@ -917,7 +908,7 @@ static int vmk80xx_cnt_rinsn(struct comedi_device *dev,
        down(&devpriv->limit_sem);
        chan = CR_CHAN(insn->chanspec);
 
-       switch (boardinfo->model) {
+       switch (devpriv->model) {
        case VMK8055_MODEL:
                if (!chan)
                        reg[0] = VMK8055_CNT1_REG;
@@ -936,7 +927,7 @@ static int vmk80xx_cnt_rinsn(struct comedi_device *dev,
                if (vmk80xx_read_packet(devpriv))
                        break;
 
-               if (boardinfo->model == VMK8055_MODEL)
+               if (devpriv->model == VMK8055_MODEL)
                        data[n] = devpriv->usb_rx_buf[reg[0]];
                else /* VMK8061_MODEL */
                        data[n] = devpriv->usb_rx_buf[reg[0] * (chan + 1) + 1]
@@ -952,7 +943,6 @@ static int vmk80xx_cnt_cinsn(struct comedi_device *dev,
                             struct comedi_subdevice *s,
                             struct comedi_insn *insn, unsigned int *data)
 {
-       const struct vmk80xx_board *boardinfo = comedi_board(dev);
        struct vmk80xx_private *devpriv = dev->private;
        unsigned int insn_cmd;
        int chan;
@@ -972,7 +962,7 @@ static int vmk80xx_cnt_cinsn(struct comedi_device *dev,
 
        chan = CR_CHAN(insn->chanspec);
 
-       if (boardinfo->model == VMK8055_MODEL) {
+       if (devpriv->model == VMK8055_MODEL) {
                if (!chan) {
                        cmd = VMK8055_CMD_RST_CNT1;
                        reg = VMK8055_CNT1_REG;
@@ -1192,7 +1182,7 @@ static int vmk80xx_attach_common(struct comedi_device *dev)
 
        down(&devpriv->limit_sem);
 
-       if (boardinfo->model == VMK8055_MODEL)
+       if (devpriv->model == VMK8055_MODEL)
                n_subd = 5;
        else
                n_subd = 6;
@@ -1219,7 +1209,7 @@ static int vmk80xx_attach_common(struct comedi_device *dev)
        s->maxdata = 0x00ff;
        s->range_table = boardinfo->range;
        s->insn_write = vmk80xx_ao_winsn;
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                s->subdev_flags |= SDF_READABLE;
                s->insn_read = vmk80xx_ao_rinsn;
        }
@@ -1241,7 +1231,7 @@ static int vmk80xx_attach_common(struct comedi_device *dev)
        s->maxdata = 1;
        s->insn_write = vmk80xx_do_winsn;
        s->insn_bits = vmk80xx_do_bits;
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                s->subdev_flags |= SDF_READABLE;
                s->insn_read = vmk80xx_do_rinsn;
        }
@@ -1253,14 +1243,14 @@ static int vmk80xx_attach_common(struct comedi_device *dev)
        s->n_chan = 2;
        s->insn_read = vmk80xx_cnt_rinsn;
        s->insn_config = vmk80xx_cnt_cinsn;
-       if (boardinfo->model == VMK8055_MODEL) {
+       if (devpriv->model == VMK8055_MODEL) {
                s->subdev_flags |= SDF_WRITEABLE;
                s->maxdata = (1 << boardinfo->cnt_bits) - 1;
                s->insn_write = vmk80xx_cnt_winsn;
        }
 
        /* PWM subdevice */
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                s = &dev->subdevices[5];
                s->type = COMEDI_SUBD_PWM;
                s->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
@@ -1294,7 +1284,7 @@ static int vmk80xx_auto_attach(struct comedi_device *dev,
 
        devpriv->usb = interface_to_usbdev(intf);
        devpriv->intf = intf;
-       devpriv->board = boardinfo;
+       devpriv->model = boardinfo->model;
 
        ret = vmk80xx_find_usb_endpoints(dev);
        if (ret)
@@ -1313,7 +1303,7 @@ static int vmk80xx_auto_attach(struct comedi_device *dev,
 
        usb_set_intfdata(intf, devpriv);
 
-       if (boardinfo->model == VMK8061_MODEL) {
+       if (devpriv->model == VMK8061_MODEL) {
                vmk80xx_read_eeprom(devpriv, IC3_VERSION);
                dev_info(&intf->dev, "%s\n", devpriv->fw.ic3_vers);
 
@@ -1325,7 +1315,7 @@ static int vmk80xx_auto_attach(struct comedi_device *dev,
                }
        }
 
-       if (boardinfo->model == VMK8055_MODEL)
+       if (devpriv->model == VMK8055_MODEL)
                vmk80xx_reset_device(devpriv);
 
        return vmk80xx_attach_common(dev);