kernel: split patches folder up into backport, pending and hack folders

* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>

1 files changed, 116 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.9/811-pci_disable_usb_common_quirks.patch b/target/linux/generic/pending-4.9/811-pci_disable_usb_common_quirks.patch
new file mode 100644
index 0000000..33fbf34
--- /dev/null
+++ b/target/linux/generic/pending-4.9/811-pci_disable_usb_common_quirks.patch
@@ -0,0 +1,116 @@
+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(-)
+
+Index: linux-4.9.40/drivers/usb/host/pci-quirks.c
+===================================================================
+--- linux-4.9.40.orig/drivers/usb/host/pci-quirks.c
++++ linux-4.9.40/drivers/usb/host/pci-quirks.c
+@@ -106,6 +106,8 @@ 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;
+@@ -503,6 +505,10 @@ void usb_amd_dev_put(void)
+ }
+ EXPORT_SYMBOL_GPL(usb_amd_dev_put);
+ 
++#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.
+@@ -582,8 +588,17 @@ 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;
+@@ -1150,3 +1165,4 @@ 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
+Index: linux-4.9.40/drivers/usb/host/pci-quirks.h
+===================================================================
+--- linux-4.9.40.orig/drivers/usb/host/pci-quirks.h
++++ linux-4.9.40/drivers/usb/host/pci-quirks.h
+@@ -4,6 +4,9 @@
+ #ifdef CONFIG_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_PCI */
++
++#if defined(CONFIG_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);
+@@ -17,12 +20,25 @@ void usb_disable_xhci_ports(struct pci_d
+ void sb800_prefetch(struct device *dev, int on);
+ #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) {}
+ static inline void usb_amd_dev_put(void) {}
+ static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
+ static inline void sb800_prefetch(struct device *dev, int on) {}
++static inline void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev) {}
+ #endif  /* CONFIG_PCI */
+ 
+ #endif  /*  __LINUX_USB_PCI_QUIRKS_H  */
+Index: linux-4.9.40/include/linux/usb/hcd.h
+===================================================================
+--- linux-4.9.40.orig/include/linux/usb/hcd.h
++++ linux-4.9.40/include/linux/usb/hcd.h
+@@ -461,7 +461,14 @@ 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;