From: Rafael J. Wysocki Date: Fri, 1 Dec 2017 14:08:12 +0000 (+0100) Subject: x86/PCI: Make broadcom_postcore_init() check acpi_disabled X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ddec3bdee05b06f1dda20ded003c3e10e4184cab;p=linux.git x86/PCI: Make broadcom_postcore_init() check acpi_disabled acpi_os_get_root_pointer() may return a valid address even if acpi_disabled is set, but the host bridge information from the ACPI tables is not going to be used in that case and the Broadcom host bridge initialization should not be skipped then, So make broadcom_postcore_init() check acpi_disabled too to avoid this issue. Fixes: 6361d72b04d1 (x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan) Reported-by: Dave Hansen Signed-off-by: Rafael J. Wysocki Signed-off-by: Thomas Gleixner Cc: Bjorn Helgaas Cc: Linux PCI Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/3186627.pxZj1QbYNg@aspire.rjw.lan Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/pci/broadcom_bus.c b/arch/x86/pci/broadcom_bus.c index bb461cfd01abc..526536c81ddc4 100644 --- a/arch/x86/pci/broadcom_bus.c +++ b/arch/x86/pci/broadcom_bus.c @@ -97,7 +97,7 @@ static int __init broadcom_postcore_init(void) * We should get host bridge information from ACPI unless the BIOS * doesn't support it. */ - if (acpi_os_get_root_pointer()) + if (!acpi_disabled && acpi_os_get_root_pointer()) return 0; #endif