staging: comedi: rtd520: ioremap'ed addresses are resource_size_t

As mentioned by Ian Abbott, the pci address passed to ioremap
should be a resource_size_t not an unsigned long. Use a local
variable of that type to hold the pci_resource_start() that is
passed to ioremp().

Set the dev->iobase to a dummy non-zero value so that the "detach"
can use it as a flag to know that comedi_pci_disable() needs to
be called.

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

diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 112fdc3..5aa8be1 100644 (file)
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -1619,9 +1619,8 @@ static int rtd_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        struct rtdPrivate *devpriv;
        struct pci_dev *pcidev;
        struct comedi_subdevice *s;
+       resource_size_t pci_base;
        int ret;
-       resource_size_t physLas1;       /* data area */
-       resource_size_t physLcfg;       /* PLX9080 */
 #ifdef USE_DMA
        int index;
 #endif
@@ -1655,20 +1654,15 @@ static int rtd_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                printk(KERN_INFO "Failed to enable PCI device and request regions.\n");
                return ret;
        }
-
-       /*
-        * Initialize base addresses
-        */
-       /* Get the physical address from PCI config */
-       dev->iobase = pci_resource_start(pcidev, LAS0_PCIINDEX);
-       physLas1 = pci_resource_start(pcidev, LAS1_PCIINDEX);
-       physLcfg = pci_resource_start(pcidev, LCFG_PCIINDEX);
-       /* Now have the kernel map this into memory */
-       /* ASSUME page aligned */
-       devpriv->las0 = ioremap_nocache(dev->iobase, LAS0_PCISIZE);
-       devpriv->las1 = ioremap_nocache(physLas1, LAS1_PCISIZE);
-       devpriv->lcfg = ioremap_nocache(physLcfg, LCFG_PCISIZE);
-
+       dev->iobase = 1;        /* the "detach" needs this */
+
+       /* Initialize the base addresses */
+       pci_base = pci_resource_start(pcidev, LAS0_PCIINDEX);
+       devpriv->las0 = ioremap_nocache(pci_base, LAS0_PCISIZE);
+       pci_base = pci_resource_start(pcidev, LAS1_PCIINDEX);
+       devpriv->las1 = ioremap_nocache(pci_base, LAS1_PCISIZE);
+       pci_base = pci_resource_start(pcidev, LCFG_PCIINDEX);
+       devpriv->lcfg = ioremap_nocache(pci_base, LCFG_PCISIZE);
        if (!devpriv->las0 || !devpriv->las1 || !devpriv->lcfg)
                return -ENOMEM;