> > Hi, > > > > I tried adding support for the newly added 'pcie_get_minimum_link' into > the > > bnx2x driver, but found out the some of my devices started showing width > x0. > > > > By adding debug prints, I've found out there were devices up the chain that > > Showed 0 when their PCI_EXP_LNKSTA was read by said function. > > However, when I tried looking via lspci the output claimed the width was > x4. > > I don't see a 'pcie_get_minimum_link()' function in my current tree > (git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git "next" > branch). Maybe seeing your patch (with the debug prints) would give > me a hook for somewhere to start looking. You've acked the patch and it was applied in net-next; Obviously it has yet to migrate to your tree. > > Can you figure out why lspci shows the correct value and this kernel > interface does not? The current lspci source is in > git://git.kernel.org/pub/scm/utils/pciutils/pciutils.git and the > relevant code is probably in cap_express_link() here: > http://git.kernel.org/cgit/utils/pciutils/pciutils.git/tree/ls-caps.c#n750 Traced the read as going via the pci-sysfs. Where should I look for the bus's read ops? Thanks, Yuval -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
