lanai: use pci_dev->subsystem_device

The driver reads PCI subsystem IDs from the PCI configuration registers while
it is already stored by the PCI subsystem in the 'subsystem_device' field of
'struct pci_dev'...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 4e8ba56f75d3..e828c5487493 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -1947,7 +1947,6 @@ static int __devinit lanai_pci_start(struct lanai_dev *lanai)
 {
         struct pci_dev *pci = lanai->pci;
         int result;
-        u16 w;
 
         if (pci_enable_device(pci) != 0) {
                 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable "
@@ -1965,13 +1964,7 @@ static int __devinit lanai_pci_start(struct lanai_dev *lanai)
                     "(itf %d): No suitable DMA available.\n", lanai->number);
                 return -EBUSY;
         }
-        result = pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &w);
-        if (result != PCIBIOS_SUCCESSFUL) {
-                printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
-                    "PCI_SUBSYSTEM_ID: %d\n", lanai->number, result);
-                return -EINVAL;
-        }
-        result = check_board_id_and_rev("PCI", w, NULL);
+        result = check_board_id_and_rev("PCI", pci->subsystem_device, NULL);
         if (result != 0)
                 return result;
         /* Set latency timer to zero as per lanai docs */