Code is emitting warnings when it tries to set the common clock mode for ASPM and ASPM is already configured to common clock mode by the UEFI BIOS. Let's bail out silently in such a case. pci 0004:00:00.0: ASPM: Could not configure common clock Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx> --- drivers/pci/pcie/aspm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 9783e10..072178a 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -253,6 +253,11 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link) /* Configure upstream component */ pcie_capability_read_word(parent, PCI_EXP_LNKCTL, ®16); + + /* Port might be already in common clock mode */ + if ((same_clock) && (reg16 & PCI_EXP_LNKCTL_CCC)) + return; + parent_reg = reg16; if (same_clock) reg16 |= PCI_EXP_LNKCTL_CCC; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
