From 7d96567ac0527703cf1b80043fc0ebd7f21a10ad Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Mon, 3 Nov 2008 16:46:19 -0800 Subject: 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 Signed-off-by: David S. Miller --- drivers/net/bnx2x_init.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/bnx2x_init.h b/drivers/net/bnx2x_init.h index 130927cfc75..a6c0b3abba2 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", -- cgit v1.2.3