[media] bt8xx: use pci_dev->subsystem_{vendor|device}

The driver reads PCI subsystem IDs from the PCI configuration registers while
they are already stored by the PCI subsystem in the 'subsystem_{vendor|device}'
fields of 'struct pci_dev'...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c
index 3c9e6c7e7b52..5b15f63bf065 100644
--- a/drivers/media/video/bt8xx/bttv-cards.c
+++ b/drivers/media/video/bt8xx/bttv-cards.c
@@ -2892,13 +2892,10 @@ void __devinit bttv_idcard(struct bttv *btv)
 {
         unsigned int gpiobits;
         int i,type;
-        unsigned short tmp;
 
         /* read PCI subsystem ID */
-        pci_read_config_word(btv->c.pci, PCI_SUBSYSTEM_ID, &tmp);
-        btv->cardid = tmp << 16;
-        pci_read_config_word(btv->c.pci, PCI_SUBSYSTEM_VENDOR_ID, &tmp);
-        btv->cardid |= tmp;
+        btv->cardid  = btv->c.pci->subsystem_device << 16;
+        btv->cardid |= btv->c.pci->subsystem_vendor;
 
         if (0 != btv->cardid && 0xffffffff != btv->cardid) {
                 /* look for the card */