Re: [PATCH 2/8] PCI PM: PCIe PME root port service driver (rev. 5)

From: Kenji Kaneshige
Date: Thu Feb 18 2010 - 21:14:29 EST


Rafael J. Wysocki wrote:
On Thursday 18 February 2010, Kenji Kaneshige wrote:
Hi,

I'm sorry for the delayed comments.

+
+/**
+ * pcie_pme_interrupt_enable - Enable/disable PCIe PME interrupt generation.
+ * @dev: PCIe root port or event collector.
+ * @enable: Enable or disable the interrupt.
+ */
+static void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable)
+{
+ int rtctl_pos;
+ u16 rtctl;
+
+ rtctl_pos = pci_find_capability(dev, PCI_CAP_ID_EXP) + PCI_EXP_RTCTL;
How about

rtctl_pos = pci_pcie_cap(dev) + PCI_EXP_RTCTL;

?

The pci_pcie_cap() returns PCIe capability offset saved in struct pci_dev.
By using this, we can avoid redundant search in PCI configuration space.

While I agree with the comment, I'd prefer to change this with a separate
patch, unless the entire patchset misses the merge window.


Ok. Actually, I didn't realize your set of patches was already in
linux-next, sorry. I'll send a patch as a separate one.

Thanks,
Kenji Kaneshige

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