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authorStephen Hemminger <shemminger@vyatta.com>2009-06-11 07:03:47 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-16 02:25:42 -0700
commit6cc90a5a6061428358d0f726a53fb44af5254111 (patch)
tree963a86a2f6adf2398938813d45ca8ba83831c6bc
parent9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (diff)
downloadlinux-2.6.34-ux500-6cc90a5a6061428358d0f726a53fb44af5254111.tar.gz
sky2: don't look for VPD size
The code to compute VPD size didn't handle some systems that use chip without VPD. Also some of the newer chips use some additional registers to store the actual size, and wasn't worth putting the additional complexity in, so just remove the code. No big loss since the code to set the VPD size was only a convenience so that utilities would not read the extra space past the end of the available VPD. Move the first PCI config read earlier to detect bad hardware where it returns all ones and refuse loading driver before furthur damage. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Tested-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/sky2.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 6b5946fe8ae..c6ceba95ace 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -4364,6 +4364,22 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
goto err_out;
}
+ /* Get configuration information
+ * Note: only regular PCI config access once to test for HW issues
+ * other PCI access through shared memory for speed and to
+ * avoid MMCONFIG problems.
+ */
+ err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
+ if (err) {
+ dev_err(&pdev->dev, "PCI read config failed\n");
+ goto err_out;
+ }
+
+ if (~reg == 0) {
+ dev_err(&pdev->dev, "PCI configuration read error\n");
+ goto err_out;
+ }
+
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
dev_err(&pdev->dev, "cannot obtain PCI resources\n");
@@ -4389,21 +4405,6 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
}
}
- /* Get configuration information
- * Note: only regular PCI config access once to test for HW issues
- * other PCI access through shared memory for speed and to
- * avoid MMCONFIG problems.
- */
- err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
- if (err) {
- dev_err(&pdev->dev, "PCI read config failed\n");
- goto err_out_free_regions;
- }
-
- /* size of available VPD, only impact sysfs */
- err = pci_vpd_truncate(pdev, 1ul << (((reg & PCI_VPD_ROM_SZ) >> 14) + 8));
- if (err)
- dev_warn(&pdev->dev, "Can't set VPD size\n");
#ifdef __BIG_ENDIAN
/* The sk98lin vendor driver uses hardware byte swapping but