kernel: copy kernel 4.19 code to 5.4

No changes were done to the patches while coping them. Currently they do
not apply on top of kernel 5.4.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 115 insertions, 0 deletions

diff --git a/target/linux/generic/pending-5.4/811-pci_disable_usb_common_quirks.patch b/target/linux/generic/pending-5.4/811-pci_disable_usb_common_quirks.patch
new file mode 100644
index 0000000000..848aecaa87
--- /dev/null
+++ b/target/linux/generic/pending-5.4/811-pci_disable_usb_common_quirks.patch
@@ -0,0 +1,115 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: debloat: disable common USB quirks
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ drivers/usb/host/pci-quirks.c | 16 ++++++++++++++++
+ drivers/usb/host/pci-quirks.h | 18 +++++++++++++++++-
+ include/linux/usb/hcd.h       |  7 +++++++
+ 3 files changed, 40 insertions(+), 1 deletion(-)
+
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -125,6 +125,8 @@ struct amd_chipset_type {
+ 	u8 rev;
+ };
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
++
+ static struct amd_chipset_info {
+ 	struct pci_dev	*nb_dev;
+ 	struct pci_dev	*smbus_dev;
+@@ -628,6 +630,10 @@ bool usb_amd_pt_check_port(struct device
+ }
+ EXPORT_SYMBOL_GPL(usb_amd_pt_check_port);
+ 
++#endif /* CONFIG_PCI_DISABLE_COMMON_QUIRKS */
++
++#if IS_ENABLED(CONFIG_USB_UHCI_HCD)
++
+ /*
+  * Make sure the controller is completely inactive, unable to
+  * generate interrupts or do DMA.
+@@ -707,8 +713,17 @@ reset_needed:
+ 	uhci_reset_hc(pdev, base);
+ 	return 1;
+ }
++#else
++int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base)
++{
++	return 0;
++}
++
++#endif
+ EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc);
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
++
+ static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask)
+ {
+ 	u16 cmd;
+@@ -1275,3 +1290,4 @@ static void quirk_usb_early_handoff(stru
+ }
+ DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
+ 			PCI_CLASS_SERIAL_USB, 8, quirk_usb_early_handoff);
++#endif
+--- a/drivers/usb/host/pci-quirks.h
++++ b/drivers/usb/host/pci-quirks.h
+@@ -5,6 +5,9 @@
+ #ifdef CONFIG_USB_PCI
+ void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
+ int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
++#endif  /* CONFIG_USB_PCI */
++
++#if defined(CONFIG_USB_PCI) && !defined(CONFIG_PCI_DISABLE_COMMON_QUIRKS)
+ int usb_amd_find_chipset_info(void);
+ int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev);
+ bool usb_amd_hang_symptom_quirk(void);
+@@ -19,6 +22,18 @@ void sb800_prefetch(struct device *dev,
+ bool usb_amd_pt_check_port(struct device *device, int port);
+ #else
+ struct pci_dev;
++static inline int usb_amd_find_chipset_info(void)
++{
++	return 0;
++}
++static inline bool usb_amd_hang_symptom_quirk(void)
++{
++	return false;
++}
++static inline bool usb_amd_prefetch_quirk(void)
++{
++	return false;
++}
+ static inline void usb_amd_quirk_pll_disable(void) {}
+ static inline void usb_amd_quirk_pll_enable(void) {}
+ static inline void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev) {}
+@@ -29,6 +44,11 @@ static inline bool usb_amd_pt_check_port
+ {
+ 	return false;
+ }
++static inline void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev) {}
++static inline bool usb_xhci_needs_pci_reset(struct pci_dev *pdev)
++{
++	return false;
++}
+ #endif  /* CONFIG_USB_PCI */
+ 
+ #endif  /*  __LINUX_USB_PCI_QUIRKS_H  */
+--- a/include/linux/usb/hcd.h
++++ b/include/linux/usb/hcd.h
+@@ -473,7 +473,14 @@ extern int usb_hcd_pci_probe(struct pci_
+ extern void usb_hcd_pci_remove(struct pci_dev *dev);
+ extern void usb_hcd_pci_shutdown(struct pci_dev *dev);
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
+ extern int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev);
++#else
++static inline int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev)
++{
++	return 0;
++}
++#endif
+ 
+ #ifdef CONFIG_PM
+ extern const struct dev_pm_ops usb_hcd_pci_pm_ops;