From 21b74c2785c4bb28d42ce78ae15d06749e9bedfb Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Fri, 14 Sep 2012 17:34:17 +0100 Subject: [PATCH] staging: comedi: ni_pcidio: 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_pcidio.c | 49 ++++++++++++++++-------------- 1 file changed, 27 insertions(+), 22 deletions(-) diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c index a655ab9..778a005d 100644 --- a/drivers/staging/comedi/drivers/ni_pcidio.c +++ b/drivers/staging/comedi/drivers/ni_pcidio.c @@ -1103,34 +1103,36 @@ static int pci_6534_upload_firmware(struct comedi_device *dev) return ret; } -static int nidio_find_device(struct comedi_device *dev, int bus, int slot) +/* FIXME: remove this when dynamic MITE allocation implemented. */ +static struct mite_struct *nidio_find_mite(struct pci_dev *pcidev) { 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_nidio_boards; i++) { - if (mite_device_id(mite) == nidio_boards[i].dev_id) { - dev->board_ptr = nidio_boards + i; - devpriv->mite = mite; + if (mite->pcidev == pcidev) + return mite; + } + return NULL; +} - return 0; - } - } +static const struct nidio_board * +nidio_find_boardinfo(struct pci_dev *pcidev) +{ + unsigned int dev_id = pcidev->device; + unsigned int n; + + for (n = 0; n < ARRAY_SIZE(nidio_boards); n++) { + const struct nidio_board *board = &nidio_boards[n]; + if (board->dev_id == dev_id) + return board; } - dev_warn(dev->class_dev, "no device found\n"); - mite_list_devices(); - return -EIO; + return NULL; } -static int nidio_attach(struct comedi_device *dev, struct comedi_devconfig *it) +static int __devinit nidio_attach_pci(struct comedi_device *dev, + struct pci_dev *pcidev) { struct comedi_subdevice *s; int ret; @@ -1141,9 +1143,12 @@ static int nidio_attach(struct comedi_device *dev, struct comedi_devconfig *it) return ret; spin_lock_init(&devpriv->mite_channel_lock); - ret = nidio_find_device(dev, it->options[0], it->options[1]); - if (ret < 0) - return ret; + dev->board_ptr = nidio_find_boardinfo(pcidev); + if (!dev->board_ptr) + return -ENODEV; + devpriv->mite = nidio_find_mite(pcidev); + if (!devpriv->mite) + return -ENODEV; ret = mite_setup(devpriv->mite); if (ret < 0) { @@ -1226,7 +1231,7 @@ static void nidio_detach(struct comedi_device *dev) static struct comedi_driver ni_pcidio_driver = { .driver_name = "ni_pcidio", .module = THIS_MODULE, - .attach = nidio_attach, + .attach_pci = nidio_attach_pci, .detach = nidio_detach, }; -- 2.7.4