ems_pci: fix size of CAN controllers BAR mapping for CPC-PCI v2

The driver mapped only 128 bytes of the CAN controller address space when a
CPC-PCI v2 was detected (incl. CPC-104P). This patch will fix it by always
mapping the whole address space (4096 bytes on all boards) of the
corresponding PCI BAR.

Signed-off-by: Sebastian Haas <haas@ems-wuensche.com>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/can/sja1000/ems_pci.c b/drivers/net/can/sja1000/ems_pci.c
index 7d84b8a..fd04789 100644 (file)
--- a/drivers/net/can/sja1000/ems_pci.c
+++ b/drivers/net/can/sja1000/ems_pci.c
@@ -94,12 +94,14 @@ struct ems_pci_card {
 #define EMS_PCI_CDR             (CDR_CBP | CDR_CLKOUT_MASK)
 
 #define EMS_PCI_V1_BASE_BAR     1
-#define EMS_PCI_V1_MEM_SIZE     4096
+#define EMS_PCI_V1_CONF_SIZE    4096 /* size of PITA control area */
 #define EMS_PCI_V2_BASE_BAR     2
-#define EMS_PCI_V2_MEM_SIZE     128
+#define EMS_PCI_V2_CONF_SIZE    128 /* size of PLX control area */
 #define EMS_PCI_CAN_BASE_OFFSET 0x400 /* offset where the controllers starts */
 #define EMS_PCI_CAN_CTRL_SIZE   0x200 /* memory size for each controller */
 
+#define EMS_PCI_BASE_SIZE  4096 /* size of controller area */
+
 static struct pci_device_id ems_pci_tbl[] = {
        /* CPC-PCI v1 */
        {PCI_VENDOR_ID_SIEMENS, 0x2104, PCI_ANY_ID, PCI_ANY_ID,},
@@ -224,7 +226,7 @@ static int __devinit ems_pci_add_card(struct pci_dev *pdev,
        struct sja1000_priv *priv;
        struct net_device *dev;
        struct ems_pci_card *card;
-       int max_chan, mem_size, base_bar;
+       int max_chan, conf_size, base_bar;
        int err, i;
 
        /* Enabling PCI device */
@@ -251,22 +253,22 @@ static int __devinit ems_pci_add_card(struct pci_dev *pdev,
                card->version = 2; /* CPC-PCI v2 */
                max_chan = EMS_PCI_V2_MAX_CHAN;
                base_bar = EMS_PCI_V2_BASE_BAR;
-               mem_size = EMS_PCI_V2_MEM_SIZE;
+               conf_size = EMS_PCI_V2_CONF_SIZE;
        } else {
                card->version = 1; /* CPC-PCI v1 */
                max_chan = EMS_PCI_V1_MAX_CHAN;
                base_bar = EMS_PCI_V1_BASE_BAR;
-               mem_size = EMS_PCI_V1_MEM_SIZE;
+               conf_size = EMS_PCI_V1_CONF_SIZE;
        }
 
        /* Remap configuration space and controller memory area */
-       card->conf_addr = pci_iomap(pdev, 0, mem_size);
+       card->conf_addr = pci_iomap(pdev, 0, conf_size);
        if (card->conf_addr == NULL) {
                err = -ENOMEM;
                goto failure_cleanup;
        }
 
-       card->base_addr = pci_iomap(pdev, base_bar, mem_size);
+       card->base_addr = pci_iomap(pdev, base_bar, EMS_PCI_BASE_SIZE);
        if (card->base_addr == NULL) {
                err = -ENOMEM;
                goto failure_cleanup;