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authorAuke Kok <auke-jan.h.kok@intel.com>2007-06-08 15:46:36 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:02:10 -0700
commit44c10138fd4bbc4b6d6bff0873c24902f2a9da65 (patch)
tree6e16d3ec80c87490dc743f72da086356f2906ace /drivers/net/sundance.c
parentb8a3a5214d7cc115f1ca3a3967b7229d97c46f4a (diff)
downloadop-kernel-dev-44c10138fd4bbc4b6d6bff0873c24902f2a9da65.zip
op-kernel-dev-44c10138fd4bbc4b6d6bff0873c24902f2a9da65.tar.gz
PCI: Change all drivers to use pci_device->revision
Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/net/sundance.c')
-rw-r--r--drivers/net/sundance.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index e1f912d..c9f7b7a 100644
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -397,7 +397,6 @@ struct netdev_private {
unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */
struct pci_dev *pci_dev;
void __iomem *base;
- unsigned char pci_rev_id;
};
/* The station address location in the EEPROM. */
@@ -544,8 +543,6 @@ static int __devinit sundance_probe1 (struct pci_dev *pdev,
dev->change_mtu = &change_mtu;
pci_set_drvdata(pdev, dev);
- pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
-
i = register_netdev(dev);
if (i)
goto err_out_unmap_rx;
@@ -828,7 +825,7 @@ static int netdev_open(struct net_device *dev)
iowrite8(100, ioaddr + RxDMAPollPeriod);
iowrite8(127, ioaddr + TxDMAPollPeriod);
/* Fix DFE-580TX packet drop issue */
- if (np->pci_rev_id >= 0x14)
+ if (np->pci_dev->revision >= 0x14)
iowrite8(0x01, ioaddr + DebugCtrl1);
netif_start_queue(dev);
@@ -1194,7 +1191,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
hw_frame_id = ioread8(ioaddr + TxFrameId);
}
- if (np->pci_rev_id >= 0x14) {
+ if (np->pci_dev->revision >= 0x14) {
spin_lock(&np->lock);
for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
int entry = np->dirty_tx % TX_RING_SIZE;
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