From ca5119c93f0dee89b5543fbdbc0c96a046ed20e6 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Mon, 1 Sep 2014 12:03:37 +0100 Subject: [PATCH] staging: comedi: amplc_pci230: remove "legacy" attach mechanism The "amplc_pci230" driver currently retains the legacy attach mechanism to allow devices to be attached manually via the `COMEDI_DEVCONFIG` ioctl. The only real use for this is to pretend that a PCI230+ or PCI260+ is a PCI230 or PCI260 for backwards compatibility, as they have different number of bits of resolution on the AI subdevice. Since the card would be automatically configured as a PCI230+ or PCI260+ at PCI probe time anyway, hopefully any users who want it to appear as a PCI230 or PCI260 would have got tired of removing the automatically configured device and configuring it manually by now and will have updated their software to cope with the PCI230+ or PCI260+. Get rid of the legacy attach mechanism by removing the Comedi driver "attach" handler `pci230_attach()` and associated code. Also remove the "wildcard" entry from the board table `pci230_boards[]` as it is no longer needed. Don't bother initializing the `board_name`, `offset`, and `num_names` members of `struct comedi_driver amplc_pci230_driver` any longer as they are only needed when configuring the device manually. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/amplc_pci230.c | 92 ++----------------- 1 file changed, 9 insertions(+), 83 deletions(-) diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c index 56141de44fd4..393712c1b13e 100644 --- a/drivers/staging/comedi/drivers/amplc_pci230.c +++ b/drivers/staging/comedi/drivers/amplc_pci230.c @@ -24,24 +24,19 @@ * Author: Allan Willcox , * Steve D Sharples , * Ian Abbott - * Updated: Wed, 22 Oct 2008 12:34:49 +0100 - * Devices: [Amplicon] PCI230 (pci230 or amplc_pci230), - * PCI230+ (pci230+ or amplc_pci230), - * PCI260 (pci260 or amplc_pci230), PCI260+ (pci260+ or amplc_pci230) + * Updated: Mon, 01 Sep 2014 10:09:16 +0000 + * Devices: [Amplicon] PCI230 (amplc_pci230), PCI230+, PCI260, PCI260+ * Status: works * * Configuration options: - * [0] - PCI bus of device (optional). - * [1] - PCI slot of device (optional). - * If bus/slot is not specified, the first available PCI device - * will be used. + * none * - * Configuring a "amplc_pci230" will match any supported card and it will - * choose the best match, picking the "+" models if possible. Configuring - * a "pci230" will match a PCI230 or PCI230+ card and it will be treated as - * a PCI230. Configuring a "pci260" will match a PCI260 or PCI260+ card - * and it will be treated as a PCI260. Configuring a "pci230+" will match - * a PCI230+ card. Configuring a "pci260+" will match a PCI260+ card. + * Manual configuration of PCI cards is not supported; they are configured + * automatically. + * + * The PCI230+ and PCI260+ have the same PCI device IDs as the PCI230 and + * PCI260, but can be distinguished by the the size of the PCI regions. A + * card will be configured as a "+" model if detected as such. * * Subdevices: * @@ -201,7 +196,6 @@ */ #define PCI_DEVICE_ID_PCI230 0x0000 #define PCI_DEVICE_ID_PCI260 0x0006 -#define PCI_DEVICE_ID_INVALID 0xffff /* * PCI230 i/o space 1 registers. @@ -501,11 +495,6 @@ static const struct pci230_board pci230_boards[] = { .ai_chans = 16, .ai_bits = 12, }, - { - /* Wildcard matches any above */ - .name = "amplc_pci230", - .id = PCI_DEVICE_ID_INVALID, - }, }; struct pci230_private { @@ -2553,46 +2542,6 @@ static const struct pci230_board *pci230_find_pci_board(struct pci_dev *pci_dev) return NULL; } -/* Look for PCI device matching requested board name, bus and slot. */ -static struct pci_dev *pci230_find_pci_dev(struct comedi_device *dev, - struct comedi_devconfig *it) -{ - const struct pci230_board *thisboard = comedi_board(dev); - struct pci_dev *pci_dev = NULL; - int bus = it->options[0]; - int slot = it->options[1]; - - for_each_pci_dev(pci_dev) { - /* Check vendor ID (same for all supported PCI boards). */ - if (pci_dev->vendor != PCI_VENDOR_ID_AMPLICON) - continue; - /* If bus/slot specified, check them. */ - if ((bus || slot) && - (bus != pci_dev->bus->number || - slot != PCI_SLOT(pci_dev->devfn))) - continue; - if (thisboard->id == PCI_DEVICE_ID_INVALID) { - /* Wildcard board matches any supported PCI board. */ - const struct pci230_board *foundboard; - - foundboard = pci230_find_pci_board(pci_dev); - if (foundboard == NULL) - continue; - /* Replace wildcard board_ptr. */ - dev->board_ptr = foundboard; - } else { - /* Need to match a specific board. */ - if (!pci230_match_pci_board(thisboard, pci_dev)) - continue; - } - return pci_dev; - } - dev_err(dev->class_dev, - "No supported board found! (req. bus %d, slot %d)\n", - bus, slot); - return NULL; -} - static int pci230_alloc_private(struct comedi_device *dev) { struct pci230_private *devpriv; @@ -2761,25 +2710,6 @@ static int pci230_attach_common(struct comedi_device *dev, return 0; } -static int pci230_attach(struct comedi_device *dev, struct comedi_devconfig *it) -{ - const struct pci230_board *thisboard = comedi_board(dev); - struct pci_dev *pci_dev; - int rc; - - dev_info(dev->class_dev, "amplc_pci230: attach %s %d,%d\n", - thisboard->name, it->options[0], it->options[1]); - - rc = pci230_alloc_private(dev); - if (rc) - return rc; - - pci_dev = pci230_find_pci_dev(dev, it); - if (!pci_dev) - return -EIO; - return pci230_attach_common(dev, pci_dev); -} - static int pci230_auto_attach(struct comedi_device *dev, unsigned long context_unused) { @@ -2821,12 +2751,8 @@ static void pci230_detach(struct comedi_device *dev) static struct comedi_driver amplc_pci230_driver = { .driver_name = "amplc_pci230", .module = THIS_MODULE, - .attach = pci230_attach, .auto_attach = pci230_auto_attach, .detach = pci230_detach, - .board_name = &pci230_boards[0].name, - .offset = sizeof(pci230_boards[0]), - .num_names = ARRAY_SIZE(pci230_boards), }; static int amplc_pci230_pci_probe(struct pci_dev *dev, -- 2.30.2