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PCI: pciehp: Add pcie_wait_link_not_active()

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Will use it for link disable status checking.

Signed-off-by: Yinghai Lu <yinghai.lu@oracle.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yinghai Lu 2012-01-27 10:55:13 -08:00 committed by Jesse Barnes
parent 4e2ce405b2
commit bffe4f72fc
1 changed files with 15 additions and 4 deletions
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19
drivers/pci/hotplug/pciehp_hpc.c
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@ -257,19 +257,30 @@ static bool check_link_active(struct controller *ctrl)
return ret;
}
static void pcie_wait_link_active(struct controller *ctrl)
static void __pcie_wait_link_active(struct controller *ctrl, bool active)
{
int timeout = 1000;
if (check_link_active(ctrl))
if (check_link_active(ctrl) == active)
return;
while (timeout > 0) {
msleep(10);
timeout -= 10;
if (check_link_active(ctrl))
if (check_link_active(ctrl) == active)
return;
}
ctrl_dbg(ctrl, "Data Link Layer Link Active not set in 1000 msec\n");
ctrl_dbg(ctrl, "Data Link Layer Link Active not %s in 1000 msec\n",
active ? "set" : "cleared");
}
static void pcie_wait_link_active(struct controller *ctrl)
{
__pcie_wait_link_active(ctrl, true);
}
static void pcie_wait_link_not_active(struct controller *ctrl)
{
__pcie_wait_link_active(ctrl, false);
}
static bool pci_bus_check_dev(struct pci_bus *bus, int devfn)