diff options
| author | Eilon Greenstein <eilong@broadcom.com> | 2008-11-03 16:46:19 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-03 16:46:19 -0800 |
| commit | 7d96567ac0527703cf1b80043fc0ebd7f21a10ad (patch) | |
| tree | c51fc21eb9149b8ac13bec127c8f9e6599a8164c /drivers/net/bnx2x_init.h | |
| parent | 9a0354405feb0f8bd460349a93db05e4cca8d166 (diff) | |
| download | lwn-7d96567ac0527703cf1b80043fc0ebd7f21a10ad.tar.gz lwn-7d96567ac0527703cf1b80043fc0ebd7f21a10ad.zip | |
bnx2x: PCI configuration bug on big-endian
The current code read nothing but zeros on big-endian (wrong part of the
32bits). This caused poor performance on big-endian machines. Though this
issue did not cause the system to crash, the performance is significantly
better with the fix so I view it as critical bug fix.
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2x_init.h')
| -rw-r--r-- | drivers/net/bnx2x_init.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/bnx2x_init.h b/drivers/net/bnx2x_init.h index 130927cfc75b..a6c0b3abba29 100644 --- a/drivers/net/bnx2x_init.h +++ b/drivers/net/bnx2x_init.h @@ -564,14 +564,15 @@ static const struct arb_line write_arb_addr[NUM_WR_Q-1] = { static void bnx2x_init_pxp(struct bnx2x *bp) { + u16 devctl; int r_order, w_order; u32 val, i; pci_read_config_word(bp->pdev, - bp->pcie_cap + PCI_EXP_DEVCTL, (u16 *)&val); - DP(NETIF_MSG_HW, "read 0x%x from devctl\n", (u16)val); - w_order = ((val & PCI_EXP_DEVCTL_PAYLOAD) >> 5); - r_order = ((val & PCI_EXP_DEVCTL_READRQ) >> 12); + bp->pcie_cap + PCI_EXP_DEVCTL, &devctl); + DP(NETIF_MSG_HW, "read 0x%x from devctl\n", devctl); + w_order = ((devctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5); + r_order = ((devctl & PCI_EXP_DEVCTL_READRQ) >> 12); if (r_order > MAX_RD_ORD) { DP(NETIF_MSG_HW, "read order of %d order adjusted to %d\n", |