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| author | Ian Abbott <abbotti@mev.co.uk> | 2013-04-12 12:57:54 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-12 22:12:42 (GMT) |
| commit | fed9fd2cc6ac2b01f928bef3ce62a9d8058f514d (patch) | |
| tree | 05b28e32fb9253047c7faf3dd39fd93dd8417168 /drivers | |
| parent | aee351b28ccc7b966a14c8a8e146c6b74d4717cc (diff) | |
| download | linux-fsl-qoriq-fed9fd2cc6ac2b01f928bef3ce62a9d8058f514d.tar.xz | |
staging: comedi: 8255_pci: check BAR resource type directly
This driver handles one or more 8255 DIO subdevices mapped contiguously
at the start of a PCI BAR resource. The resource may be a portio
resource or an mmio resource. The driver currently checks the `is_mmio`
member of the matching element of `pci_8255_boards[]` to determine the
type of resource. Rather than doing that, get the information straight
from the horse's mouth by checking the resource flags of the PCI BAR
and eliminate the `is_mmio` member.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/comedi/drivers/8255_pci.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/staging/comedi/drivers/8255_pci.c b/drivers/staging/comedi/drivers/8255_pci.c index fff1c08..de54ad3 100644 --- a/drivers/staging/comedi/drivers/8255_pci.c +++ b/drivers/staging/comedi/drivers/8255_pci.c @@ -80,7 +80,6 @@ enum pci_8255_boardid { struct pci_8255_boardinfo { const char *name; int dio_badr; - int is_mmio; int n_8255; }; @@ -123,43 +122,36 @@ static const struct pci_8255_boardinfo pci_8255_boards[] = { [BOARD_NI_PCIDIO96] = { .name = "ni_pci-dio-96", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 4, }, [BOARD_NI_PCIDIO96B] = { .name = "ni_pci-dio-96b", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 4, }, [BOARD_NI_PXI6508] = { .name = "ni_pxi-6508", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 4, }, [BOARD_NI_PCI6503] = { .name = "ni_pci-6503", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 1, }, [BOARD_NI_PCI6503B] = { .name = "ni_pci-6503b", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 1, }, [BOARD_NI_PCI6503X] = { .name = "ni_pci-6503x", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 1, }, [BOARD_NI_PXI_6503] = { .name = "ni_pxi-6503", .dio_badr = 1, - .is_mmio = 1, .n_8255 = 1, }, }; @@ -187,6 +179,7 @@ static int pci_8255_auto_attach(struct comedi_device *dev, const struct pci_8255_boardinfo *board = NULL; struct pci_8255_private *devpriv; struct comedi_subdevice *s; + bool is_mmio; int ret; int i; @@ -206,7 +199,9 @@ static int pci_8255_auto_attach(struct comedi_device *dev, if (ret) return ret; - if (board->is_mmio) { + is_mmio = (pci_resource_flags(pcidev, board->dio_badr) & + IORESOURCE_MEM) != 0; + if (is_mmio) { devpriv->mmio_base = pci_ioremap_bar(pcidev, board->dio_badr); if (!devpriv->mmio_base) return -ENOMEM; @@ -227,7 +222,7 @@ static int pci_8255_auto_attach(struct comedi_device *dev, unsigned long iobase; s = &dev->subdevices[i]; - if (board->is_mmio) { + if (is_mmio) { iobase = (unsigned long)(devpriv->mmio_base + (i * 4)); ret = subdev_8255_init(dev, s, pci_8255_mmio, iobase); } else { |