octeon: fix octeon build with CONFIG_KERNEL_WERROR

Add a patch fixing a bunch of missing prototype errors, scattered all over the
tree.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>

4 files changed, 134 insertions, 9 deletions

diff --git a/target/linux/octeon/patches-6.12/000-fix-octeon-kernel-build.patch b/target/linux/octeon/patches-6.12/000-fix-octeon-kernel-build.patch
new file mode 100644
index 0000000000..5381c1d9eb
--- /dev/null
+++ b/target/linux/octeon/patches-6.12/000-fix-octeon-kernel-build.patch
@@ -0,0 +1,116 @@
+--- a/arch/mips/cavium-octeon/octeon-platform.c
++++ b/arch/mips/cavium-octeon/octeon-platform.c
+@@ -15,6 +15,7 @@
+ #include <linux/libfdt.h>
+ 
+ #include <asm/octeon/octeon.h>
++#include <asm/octeon/octeon-platform.h>
+ #include <asm/octeon/cvmx-helper-board.h>
+ 
+ #ifdef CONFIG_USB
+--- a/arch/mips/cavium-octeon/executive/cvmx-interrupt-decodes.c
++++ b/arch/mips/cavium-octeon/executive/cvmx-interrupt-decodes.c
+@@ -34,6 +34,7 @@
+ 
+ #include <asm/octeon/octeon.h>
+ 
++#include <asm/octeon/cvmx-interrupt-decodes.h>
+ #include <asm/octeon/cvmx-gmxx-defs.h>
+ #include <asm/octeon/cvmx-pcsx-defs.h>
+ #include <asm/octeon/cvmx-pcsxx-defs.h>
+--- a/arch/mips/cavium-octeon/executive/cvmx-helper-errata.c
++++ b/arch/mips/cavium-octeon/executive/cvmx-helper-errata.c
+@@ -39,6 +39,8 @@
+ 
+ #include <asm/octeon/cvmx-helper-jtag.h>
+ 
++#include <asm/octeon/cvmx-helper-errata.h>
++
+ /**
+  * Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
+  * 1 doesn't work properly. The following code disables 2nd order
+--- a/arch/mips/cavium-octeon/smp.c
++++ b/arch/mips/cavium-octeon/smp.c
+@@ -92,6 +92,8 @@ static irqreturn_t mailbox_interrupt(int
+ 	return IRQ_HANDLED;
+ }
+ 
++void octeon_send_ipi_single(int cpu, unsigned int action);
++
+ /*
+  * Cause the function described by call_data to be executed on the passed
+  * cpu.	 When the function has finished, increment the finished field of
+--- a/arch/mips/mm/c-octeon.c
++++ b/arch/mips/mm/c-octeon.c
+@@ -16,6 +16,7 @@
+ 
+ #include <asm/bcache.h>
+ #include <asm/bootinfo.h>
++#include <asm/c-octeon.h>
+ #include <asm/cacheops.h>
+ #include <asm/cpu-features.h>
+ #include <asm/cpu-type.h>
+--- /dev/null
++++ b/arch/mips/include/asm/c-octeon.h
+@@ -0,0 +1,9 @@
++#ifndef __C_OCTEON_H__
++#define __C_OCTEON_H__
++
++extern int register_co_cache_error_notifier(struct notifier_block *nb);
++extern int unregister_co_cache_error_notifier(struct notifier_block *nb);
++extern void cache_parity_error_octeon_recoverable(void);
++extern void cache_parity_error_octeon_non_recoverable(void);
++
++#endif
+--- /dev/null
++++ b/drivers/watchdog/octeon-wdt-main.h
+@@ -0,0 +1,5 @@
++#ifdef CONFIG_OCTEON_WDT
++
++extern void octeon_wdt_nmi_stage3(u64 reg[32]);
++
++#endif
+--- a/drivers/watchdog/octeon-wdt-main.c
++++ b/drivers/watchdog/octeon-wdt-main.c
+@@ -64,6 +64,8 @@
+ #include <asm/octeon/cvmx-ciu2-defs.h>
+ #include <asm/octeon/cvmx-rst-defs.h>
+ 
++#include "octeon-wdt-main.h"
++
+ /* Watchdog interrupt major block number (8 MSBs of intsn) */
+ #define WD_BLOCK_NUMBER		0x01
+ 
+--- a/arch/mips/include/asm/octeon/pci-octeon.h
++++ b/arch/mips/include/asm/octeon/pci-octeon.h
+@@ -24,6 +24,12 @@
+  */
+ #define CVMX_PCIE_BAR1_RC_BASE (1ull << 41)
+ 
++extern int octeon_pci_pcibios_map_irq(const struct pci_dev *dev, u8 slot,
++				      u8 pin);
++
++extern int octeon_pcie_pcibios_map_irq(const struct pci_dev *dev, u8 slot,
++				       u8 pin);
++
+ /*
+  * pcibios_map_irq() is defined inside pci-octeon.c. All it does is
+  * call the Octeon specific version pointed to by this variable. This
+--- /dev/null
++++ b/arch/mips/include/asm/octeon/cvmx-interrupt-decodes.h
+@@ -0,0 +1,6 @@
++#ifndef __CVMX_INTERRUPT_DECODES_H__
++#define __CVMX_INTERRUPT_DECODES_H__
++
++extern void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block);
++
++#endif
+--- /dev/null
++++ b/arch/mips/include/asm/octeon/octeon-platform.h
+@@ -0,0 +1,6 @@
++#ifndef __OCTEON_PLATFORM_H__
++#define __OCTEON_PLATFORM_H__
++
++extern void octeon_fill_mac_addresses(void);
++
++#endif
diff --git a/target/linux/octeon/patches-6.12/130-add_itus_support.patch b/target/linux/octeon/patches-6.12/130-add_itus_support.patch
index cf841c613e..fd84a2580a 100644
--- a/target/linux/octeon/patches-6.12/130-add_itus_support.patch
+++ b/target/linux/octeon/patches-6.12/130-add_itus_support.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/cavium-octeon/octeon-platform.c
 +++ b/arch/mips/cavium-octeon/octeon-platform.c
-@@ -775,7 +775,7 @@ int __init octeon_prune_device_tree(void
+@@ -776,7 +776,7 @@ int __init octeon_prune_device_tree(void
  	if (fdt_check_header(initial_boot_params))
  		panic("Corrupt Device Tree.");
  
diff --git a/target/linux/octeon/patches-6.12/150-ubnt_usg_support.patch b/target/linux/octeon/patches-6.12/150-ubnt_usg_support.patch
index dd69f728a1..bbd17af38e 100644
--- a/target/linux/octeon/patches-6.12/150-ubnt_usg_support.patch
+++ b/target/linux/octeon/patches-6.12/150-ubnt_usg_support.patch
@@ -18,7 +18,7 @@
  		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_ITUS_SHIELD)
 --- a/arch/mips/cavium-octeon/octeon-platform.c
 +++ b/arch/mips/cavium-octeon/octeon-platform.c
-@@ -636,6 +636,7 @@ static void __init octeon_rx_tx_delay(in
+@@ -637,6 +637,7 @@ static void __init octeon_rx_tx_delay(in
  		}
  		break;
  	case CVMX_BOARD_TYPE_UBNT_E100:
diff --git a/target/linux/octeon/patches-6.12/400-ubnt_dts_pruning.patch b/target/linux/octeon/patches-6.12/400-ubnt_dts_pruning.patch
index b4f36c3507..abc9f39c1a 100644
--- a/target/linux/octeon/patches-6.12/400-ubnt_dts_pruning.patch
+++ b/target/linux/octeon/patches-6.12/400-ubnt_dts_pruning.patch
@@ -17,7 +17,7 @@ Date:   Tue Jun 17 13:58:19 2025 +0200
 
 --- a/arch/mips/cavium-octeon/octeon-platform.c
 +++ b/arch/mips/cavium-octeon/octeon-platform.c
-@@ -1133,6 +1133,41 @@ end_led:
+@@ -1134,6 +1134,41 @@ end_led:
  	}
  #endif
  
@@ -61,14 +61,14 @@ Date:   Tue Jun 17 13:58:19 2025 +0200
  
 --- a/arch/mips/cavium-octeon/setup.c
 +++ b/arch/mips/cavium-octeon/setup.c
-@@ -1168,6 +1168,7 @@ void __init prom_free_prom_memory(void)
- 	}
- }
+@@ -43,6 +43,7 @@
+ #include <asm/time.h>
  
-+int __init ubnt_prune_device_tree(void);
- void __init octeon_fill_mac_addresses(void);
+ #include <asm/octeon/octeon.h>
++#include <asm/octeon/octeon-platform.h>
+ #include <asm/octeon/pci-octeon.h>
+ #include <asm/octeon/cvmx-rst-defs.h>
  
- void __init device_tree_init(void)
 @@ -1207,6 +1208,9 @@ void __init device_tree_init(void)
  		octeon_prune_device_tree();
  		pr_info("Using internal Device Tree.\n");
@@ -79,3 +79,12 @@ Date:   Tue Jun 17 13:58:19 2025 +0200
  	if (fill_mac)
  		octeon_fill_mac_addresses();
  	unflatten_and_copy_device_tree();
+--- a/arch/mips/include/asm/octeon/octeon-platform.h
++++ b/arch/mips/include/asm/octeon/octeon-platform.h
+@@ -2,5 +2,6 @@
+ #define __OCTEON_PLATFORM_H__
+ 
+ extern void octeon_fill_mac_addresses(void);
++extern int ubnt_prune_device_tree(void);
+ 
+ #endif