3.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alan Cox <a...@linux.intel.com> commit 80b3e557371205566a71e569fbfcce5b11f92dbe upstream. Despite lots of investigation into why this is needed we don't know or have an elegant cure. The only answer found on this laptop is to mark a problem region as used so that Linux doesn't put anything there. Currently all the users add reserve= command lines and anyone not knowing this needs to find the magic page that documents it. Automate it instead. Signed-off-by: Alan Cox <a...@linux.intel.com> Tested-and-bugfixed-by: Arne Fitzenreiter <a...@fitzenreiter.de> Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=10231 Link: http://lkml.kernel.org/r/20120515174347.5109.94551.stgit@bluebook Signed-off-by: Ingo Molnar <mi...@kernel.org> Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- arch/x86/pci/fixup.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index d0e6e40..5dd467b 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -519,3 +519,20 @@ static void sb600_disable_hpet_bar(struct pci_dev *dev) } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, 0x4385, sb600_disable_hpet_bar); + +/* + * Twinhead H12Y needs us to block out a region otherwise we map devices + * there and any access kills the box. + * + * See: https://bugzilla.kernel.org/show_bug.cgi?id=10231 + * + * Match off the LPC and svid/sdid (older kernels lose the bridge subvendor) + */ +static void __devinit twinhead_reserve_killing_zone(struct pci_dev *dev) +{ + if (dev->subsystem_vendor == 0x14FF && dev->subsystem_device == 0xA003) { + pr_info("Reserving memory on Twinhead H12Y\n"); + request_mem_region(0xFFB00000, 0x100000, "twinhead"); + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x27B9, twinhead_reserve_killing_zone); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
