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pciehp: remove needless command completed interrupt setting

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Currently, pciehp driver enables command completed interrupt as follows.

(1) Don't enable at initialization.
(2) Enable command completed interrupt whenever pciehp issues a
    command, if the command doesn't attempt to disable the interrupt.
(3) Disable command completed interrupt at driver unloading.

Once we enable command completed interrupt, we don't need to re-enable
it for every command. So we can simplify above steps as follows:

(1) Enable command completed interrupt at initialization.
(2) No special sequence for command completed interrupt.
(3) Disable command completed interrupt at driver unloading.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Kenji Kaneshige 2008-06-26 20:07:33 +09:00 • committed by Jesse Barnes
parent c4635eb06a
commit 3aa50c4462
1 changed files with 3 additions and 7 deletions
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10
drivers/pci/hotplug/pciehp_hpc.c
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@ -337,10 +337,6 @@ static int pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
slot_ctrl &= ~mask;
slot_ctrl |= (cmd & mask);
/* Don't enable command completed if caller is changing it. */
if (!(mask & CMD_CMPL_INTR_ENABLE))
slot_ctrl |= CMD_CMPL_INTR_ENABLE;
ctrl->cmd_busy = 1;
smp_mb();
retval = pciehp_writew(ctrl, SLOTCTRL, slot_ctrl);
@ -996,10 +992,10 @@ int pcie_enable_notification(struct controller *ctrl)
if (MRL_SENS(ctrl))
cmd |= MRL_DETECT_ENABLE;
if (!pciehp_poll_mode)
cmd |= HP_INTR_ENABLE;
cmd |= HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE |
PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE | HP_INTR_ENABLE;
mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE | MRL_DETECT_ENABLE |
PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
if (pcie_write_cmd(ctrl, cmd, mask)) {
err("%s: Cannot enable software notification\n", __func__);