diff options
Diffstat (limited to 'target/linux/generic/pending-4.9/810-pci_disable_common_quirks.patch')
-rw-r--r-- | target/linux/generic/pending-4.9/810-pci_disable_common_quirks.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/810-pci_disable_common_quirks.patch b/target/linux/generic/pending-4.9/810-pci_disable_common_quirks.patch new file mode 100644 index 0000000000..f63c8ea357 --- /dev/null +++ b/target/linux/generic/pending-4.9/810-pci_disable_common_quirks.patch @@ -0,0 +1,67 @@ +From: Gabor Juhos <juhosg@openwrt.org> +Subject: debloat: add kernel config option to disabling common PCI quirks + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- + drivers/pci/Kconfig | 6 ++++++ + drivers/pci/quirks.c | 6 ++++++ + 2 files changed, 12 insertions(+) + +diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig +index 6555eb78d91c..120fe3921820 100644 +--- 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 +diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c +index 5d8151b43fbb..cb356e78e743 100644 +--- a/drivers/pci/quirks.c ++++ b/drivers/pci/quirks.c +@@ -41,6 +41,7 @@ static void quirk_mmio_always_on(struct pci_dev *dev) + 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. +@@ -3038,6 +3039,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata); + 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 +@@ -3094,6 +3096,8 @@ static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime, + } + } + ++#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). +@@ -3128,6 +3132,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq); + 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. +-- +2.11.0 + |