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| author | Yinghai Lu <yinghai.lu@oracle.com> | 2011-11-07 07:53:23 -0800 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-11-07 08:07:34 -0800 |
| commit | fdbd3ce9efb3a045266f2f6b2f1b6047882ff092 (patch) | |
| tree | c5cc769c2e7fa8ab09061b6661406fcc168c84cb | |
| parent | c54420d3302d30999060e2669d0800b85e5b5a20 (diff) | |
| download | linux-fdbd3ce9efb3a045266f2f6b2f1b6047882ff092.tar.gz linux-fdbd3ce9efb3a045266f2f6b2f1b6047882ff092.tar.bz2 linux-fdbd3ce9efb3a045266f2f6b2f1b6047882ff092.zip | |
PCI: pciehp: Retrieve link speed after link is trained
During hot plug, board_added will call pciehp_power_on_slot().
But link speed is updated in pciehp_power_on_slot().
We should not update link speed there, because that is too early.
So move the link speed update to pciehp_check_link_status() after making
sure the link has been trained.
-v2: fix compile warning that Kenji found.
Signed-off-by: Yinghai Lu <yinghai.lu@oracle.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| -rw-r--r-- | drivers/pci/hotplug/pciehp_hpc.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 96dc4734e4af..6692832c9c81 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -294,6 +294,8 @@ int pciehp_check_link_status(struct controller *ctrl) return retval; } + pcie_update_link_speed(ctrl->pcie->port->subordinate, lnk_status); + return retval; } @@ -484,7 +486,6 @@ int pciehp_power_on_slot(struct slot * slot) u16 slot_cmd; u16 cmd_mask; u16 slot_status; - u16 lnk_status; int retval = 0; /* Clear sticky power-fault bit from previous power failures */ @@ -516,14 +517,6 @@ int pciehp_power_on_slot(struct slot * slot) ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd); - retval = pciehp_readw(ctrl, PCI_EXP_LNKSTA, &lnk_status); - if (retval) { - ctrl_err(ctrl, "%s: Cannot read LNKSTA register\n", - __func__); - return retval; - } - pcie_update_link_speed(ctrl->pcie->port->subordinate, lnk_status); - return retval; } |