From b64c0f51cbf5e38ffad8e2624a3416a6fa10223b Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Fri, 14 Sep 2012 17:34:09 +0100 Subject: [PATCH] staging: comedi: ni_660x: use comedi attach_pci callback Convert this PCI driver to use the comedi `attach_pci` callback instead of the `attach` callback for PCI auto-configuration. There is no need to support manual attachment of PCI devices supported by this driver, so remove the `attach` callback altogether. Note that this driver still uses the list of PCI "mite" devices created by the "mite" module. This will be dealt with by a later patch once dynamic allocation of "mite" structures has been implemented. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_660x.c | 79 ++++++++++++++++---------------- 1 file changed, 40 insertions(+), 39 deletions(-) diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 54738c9..3b125a6 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -448,16 +448,14 @@ static inline struct ni_660x_private *private(struct comedi_device *dev) return dev->private; } -/* initialized in ni_660x_find_device() */ +/* initialized in ni_660x_attach_pci() */ static inline const struct ni_660x_board *board(struct comedi_device *dev) { return dev->board_ptr; } -#define n_ni_660x_boards ARRAY_SIZE(ni_660x_boards) - -static int ni_660x_attach(struct comedi_device *dev, - struct comedi_devconfig *it); +static int ni_660x_attach_pci(struct comedi_device *dev, + struct pci_dev *pcidev); static void ni_660x_detach(struct comedi_device *dev); static void init_tio_chip(struct comedi_device *dev, int chipset); static void ni_660x_select_pfi_output(struct comedi_device *dev, @@ -467,7 +465,7 @@ static void ni_660x_select_pfi_output(struct comedi_device *dev, static struct comedi_driver ni_660x_driver = { .driver_name = "ni_660x", .module = THIS_MODULE, - .attach = ni_660x_attach, + .attach_pci = ni_660x_attach_pci, .detach = ni_660x_detach, }; @@ -490,7 +488,6 @@ static struct pci_driver ni_660x_pci_driver = { }; module_comedi_pci_driver(ni_660x_driver, ni_660x_pci_driver); -static int ni_660x_find_device(struct comedi_device *dev, int bus, int slot); static int ni_660x_set_pfi_routing(struct comedi_device *dev, unsigned chan, unsigned source); @@ -1037,8 +1034,36 @@ static void ni_660x_free_mite_rings(struct comedi_device *dev) } } -static int ni_660x_attach(struct comedi_device *dev, - struct comedi_devconfig *it) +/* FIXME: remove this when dynamic MITE allocation implemented. */ +static struct mite_struct *ni_660x_find_mite(struct pci_dev *pcidev) +{ + struct mite_struct *mite; + + for (mite = mite_devices; mite; mite = mite->next) { + if (mite->used) + continue; + if (mite->pcidev == pcidev) + return mite; + } + return NULL; +} + +static const struct ni_660x_board * +ni_660x_find_boardinfo(struct pci_dev *pcidev) +{ + unsigned int dev_id = pcidev->device; + unsigned int n; + + for (n = 0; n < ARRAY_SIZE(ni_660x_boards); n++) { + const struct ni_660x_board *board = &ni_660x_boards[n]; + if (board->dev_id == dev_id) + return board; + } + return NULL; +} + +static int __devinit ni_660x_attach_pci(struct comedi_device *dev, + struct pci_dev *pcidev) { struct comedi_subdevice *s; int ret; @@ -1048,9 +1073,12 @@ static int ni_660x_attach(struct comedi_device *dev, ret = ni_660x_allocate_private(dev); if (ret < 0) return ret; - ret = ni_660x_find_device(dev, it->options[0], it->options[1]); - if (ret < 0) - return ret; + dev->board_ptr = ni_660x_find_boardinfo(pcidev); + if (!dev->board_ptr) + return -ENODEV; + private(dev)->mite = ni_660x_find_mite(pcidev); + if (!private(dev)->mite) + return -ENODEV; dev->board_name = board(dev)->name; @@ -1211,33 +1239,6 @@ static int ni_660x_GPCT_winsn(struct comedi_device *dev, return ni_tio_winsn(subdev_to_counter(s), insn, data); } -static int ni_660x_find_device(struct comedi_device *dev, int bus, int slot) -{ - struct mite_struct *mite; - int i; - - for (mite = mite_devices; mite; mite = mite->next) { - if (mite->used) - continue; - if (bus || slot) { - if (bus != mite->pcidev->bus->number || - slot != PCI_SLOT(mite->pcidev->devfn)) - continue; - } - - for (i = 0; i < n_ni_660x_boards; i++) { - if (mite_device_id(mite) == ni_660x_boards[i].dev_id) { - dev->board_ptr = ni_660x_boards + i; - private(dev)->mite = mite; - return 0; - } - } - } - dev_warn(dev->class_dev, "no device found\n"); - mite_list_devices(); - return -EIO; -} - static int ni_660x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) -- 2.7.4