From: Gabor Juhos Subject: debloat: add kernel config option to disabling common PCI quirks Signed-off-by: Gabor Juhos --- drivers/pci/Kconfig | 6 ++++++ drivers/pci/quirks.c | 6 ++++++ 2 files changed, 12 insertions(+) --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -71,6 +71,12 @@ config XEN_PCIDEV_FRONTEND The PCI device frontend driver allows the kernel to import arbitrary PCI devices from a PCI backend to support PCI driver domains. +config PCI_DISABLE_COMMON_QUIRKS + bool "PCI disable common quirks" + depends on PCI + help + If you don't know what to do here, say N. + config HT_IRQ bool "Interrupts on hypertransport devices" default y --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -41,6 +41,7 @@ static void quirk_mmio_always_on(struct DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on); +#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS /* The Mellanox Tavor device gives false positive parity errors * Mark this device with a broken_parity_status, to allow * PCI scanning code to "skip" this now blacklisted device. @@ -3068,6 +3069,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_I DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata); +#endif /* !CONFIG_PCI_DISABLE_COMMON_QUIRKS */ /* * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To @@ -3124,6 +3126,8 @@ static void fixup_debug_report(struct pc } } +#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS + /* * Some BIOS implementations leave the Intel GPU interrupts enabled, * even though no one is handling them (f.e. i915 driver is never loaded). @@ -3162,6 +3166,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IN DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq); +#endif /* !CONFIG_PCI_DISABLE_COMMON_QUIRKS */ + /* * PCI devices which are on Intel chips can skip the 10ms delay * before entering D3 mode.