On Mon, 2013-07-29 at 12:44 -0600, Bjorn Helgaas wrote:
> On Mon, Jul 29, 2013 at 6:52 AM, Jeff Kirsher
> <jeffrey.t.kirsher@xxxxxxxxx> wrote:
> > From: Jacob Keller <jacob.e.keller@xxxxxxxxx>
> >
> > pcie_link_speed and pcix_bus_speed are arrays used by probe.c to correctly
> > convert lnksta register values into the pci_bus_speed enum. These static arrays
> > are useful outside probe for this purpose. This patch makes these defines into
> > const arrays and exposes them with an extern header in linux/include/pci.h
> >
> > Signed-off-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>
> > Tested-by: Phil Schmitt <phillip.j.schmitt@xxxxxxxxx>
> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
> > ---
> > drivers/pci/probe.c | 4 ++--
> > include/linux/pci.h | 3 +++
> > 2 files changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> > index 46ada5c..496c5b0 100644
> > --- a/drivers/pci/probe.c
> > +++ b/drivers/pci/probe.c
> > @@ -513,7 +513,7 @@ static struct pci_host_bridge *pci_alloc_host_bridge(struct pci_bus *b)
> > return bridge;
> > }
> >
> > -static unsigned char pcix_bus_speed[] = {
> > +const unsigned char pcix_bus_speed[] = {
> > PCI_SPEED_UNKNOWN, /* 0 */
> > PCI_SPEED_66MHz_PCIX, /* 1 */
> > PCI_SPEED_100MHz_PCIX, /* 2 */
> > @@ -532,7 +532,7 @@ static unsigned char pcix_bus_speed[] = {
> > PCI_SPEED_133MHz_PCIX_533 /* F */
> > };
> >
> > -static unsigned char pcie_link_speed[] = {
> > +const unsigned char pcie_link_speed[] = {
> > PCI_SPEED_UNKNOWN, /* 0 */
> > PCIE_SPEED_2_5GT, /* 1 */
> > PCIE_SPEED_5_0GT, /* 2 */
> > diff --git a/include/linux/pci.h b/include/linux/pci.h
> > index 0fd1f15..95ff993 100644
> > --- a/include/linux/pci.h
> > +++ b/include/linux/pci.h
> > @@ -120,6 +120,9 @@ typedef int __bitwise pci_power_t;
> > /* Remember to update this when the list above changes! */
> > extern const char *pci_power_names[];
> >
> > +extern const unsigned char pcix_bus_speed[];
> > +extern const unsigned char pcie_link_speed[];
>
> As far as I can tell, you didn't actually add anything that uses
> pcix_bus_speed[].
>
I mostly added this for consistency...
> You added a pcie_link_speed[] use only in drivers/pci/pci.c; maybe
> this extern declaration could go in drivers/pci/pci.h to limit its
> visibility?
Pretty sure I use the pcie_link_speed in the ixgbe driver by including
the linux/pci.h header... Check patch 11/15 of this series where I
actually use the values, so it would need to be in the linux/pci.h
header.
>
> If you update this patch, note that we conventionally capitalize "PCI:
> Expose ..." in the changelog summary, e.g., "git log --oneline
> drivers/pci".
Oh. good to know, I will keep that in mind for future.
>
> > static inline const char *pci_power_name(pci_power_t state)
> > {
> > return pci_power_names[1 + (int) state];
> > --
> > 1.7.11.7
> >
Thanks,
Jake
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