提交 7d96567a 编写于 作者: E Eilon Greenstein 提交者: David S. Miller

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: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 9a035440
......@@ -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",
......
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