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PCI: pciehp: Simplify "Power Fault Detected" checking/clearing 

It's simpler to test the PCI_EXP_SLTSTA_PFD bit directly and to write the
constant back to PCI_EXP_SLTSTA.

No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2013-12-14 13:06:40 -07:00
parent afe2478f2e
commit 2f2ed41cf4
1 changed files with 3 additions and 3 deletions
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6
drivers/pci/hotplug/pciehp_hpc.c
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@ -501,9 +501,9 @@ int pciehp_power_on_slot(struct slot * slot)
/* Clear sticky power-fault bit from previous power failures */
pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
slot_status &= PCI_EXP_SLTSTA_PFD;
if (slot_status)
pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, slot_status);
if (slot_status & PCI_EXP_SLTSTA_PFD)
pcie_capability_write_word(pdev, PCI_EXP_SLTSTA,
PCI_EXP_SLTSTA_PFD);
ctrl->power_fault_detected = 0;
slot_cmd = POWER_ON;