powerpc: address missing-prototypes warnings

There are a few warnings in powerpc64 defconfig builds after -Wmissing-prototypes
gets promoted from W=1 to the default warning set:

arch/powerpc/mm/book3s64/pgtable.c:422:6: error: no previous prototype for 'arch_report_meminfo' [-Werror=missing-prototypes]
arch/powerpc/platforms/cell/ras.c:275:5: error: no previous prototype for 'cbe_sysreset_hack' [-Werror=missing-prototypes]
arch/powerpc/platforms/cell/spu_manage.c:29:21: error: no previous prototype for 'spu_devnode' [-Werror=missing-prototypes]
arch/powerpc/platforms/pasemi/time.c:12:17: error: no previous prototype for 'pas_get_boot_time' [-Werror=missing-prototypes]
arch/powerpc/platforms/powermac/feature.c:1532:13: error: no previous prototype for 'g5_phy_disable_cpu1' [-Werror=missing-prototypes]
arch/powerpc/platforms/86xx/pic.c:28:13: error: no previous prototype for 'mpc86xx_init_irq' [-Werror=missing-prototypes]
drivers/pci/pci-sysfs.c:936:13: error: no previous prototype for 'pci_adjust_legacy_attr' [-Werror=missing-prototypes]

Address these by including the right header files or marking the
functions static. The audit.c one is a bit tricky since compat_audit.h
cannot include regular kernel headers tht have conflicting types on
32-bit powerpc.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[mpe: Drop change to __vmemmap_free() which only exists in mm]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230727122720.2558065-1-arnd@kernel.org

11 files changed, 23 insertions, 3 deletions

diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 289f1ec85bc5..f5078a7dd85a 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -82,7 +82,8 @@ extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
 				      struct vm_area_struct *vma,
 				      enum pci_mmap_state mmap_state);
-
+extern void pci_adjust_legacy_attr(struct pci_bus *bus,
+				   enum pci_mmap_state mmap_type);
 #define HAVE_PCI_LEGACY	1
 
 extern void pcibios_claim_one_bus(struct pci_bus *b);
diff --git a/arch/powerpc/kernel/audit.c b/arch/powerpc/kernel/audit.c
index 1bcfca5fdf67..92298d6a3a37 100644
--- a/arch/powerpc/kernel/audit.c
+++ b/arch/powerpc/kernel/audit.c
@@ -4,6 +4,8 @@
 #include <linux/audit.h>
 #include <asm/unistd.h>
 
+#include "audit_32.h"
+
 static unsigned dir_class[] = {
 #include <asm-generic/audit_dir_write.h>
 ~0U
@@ -41,7 +43,6 @@ int audit_classify_arch(int arch)
 int audit_classify_syscall(int abi, unsigned syscall)
 {
 #ifdef CONFIG_PPC64
-	extern int ppc32_classify_syscall(unsigned);
 	if (abi == AUDIT_ARCH_PPC)
 		return ppc32_classify_syscall(syscall);
 #endif
diff --git a/arch/powerpc/kernel/audit_32.h b/arch/powerpc/kernel/audit_32.h
new file mode 100644
index 000000000000..c6c79c3041ab
--- /dev/null
+++ b/arch/powerpc/kernel/audit_32.h
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef __AUDIT_32_H__
+#define __AUDIT_32_H__
+
+extern int ppc32_classify_syscall(unsigned);
+
+#endif
diff --git a/arch/powerpc/kernel/compat_audit.c b/arch/powerpc/kernel/compat_audit.c
index d92ffe4e5dc1..57b38c592b9f 100644
--- a/arch/powerpc/kernel/compat_audit.c
+++ b/arch/powerpc/kernel/compat_audit.c
@@ -3,6 +3,8 @@
 #include <linux/audit_arch.h>
 #include <asm/unistd.h>
 
+#include "audit_32.h"
+
 unsigned ppc32_dir_class[] = {
 #include <asm-generic/audit_dir_write.h>
 ~0U
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 85c84e89e3ea..2f2872986b09 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -9,6 +9,7 @@
 #include <linux/memremap.h>
 #include <linux/pkeys.h>
 #include <linux/debugfs.h>
+#include <linux/proc_fs.h>
 #include <misc/cxl-base.h>
 
 #include <asm/pgalloc.h>
diff --git a/arch/powerpc/platforms/86xx/pic.c b/arch/powerpc/platforms/86xx/pic.c
index 5c7bd925653d..9ca36de23532 100644
--- a/arch/powerpc/platforms/86xx/pic.c
+++ b/arch/powerpc/platforms/86xx/pic.c
@@ -12,6 +12,8 @@
 #include <asm/mpic.h>
 #include <asm/i8259.h>
 
+#include "mpc86xx.h"
+
 #ifdef CONFIG_PPC_I8259
 static void mpc86xx_8259_cascade(struct irq_desc *desc)
 {
diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
index 98db63b72d56..f6b87926530c 100644
--- a/arch/powerpc/platforms/cell/ras.c
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -22,7 +22,7 @@
 #include <asm/cell-regs.h>
 
 #include "ras.h"
-
+#include "pervasive.h"
 
 static void dump_fir(int cpu)
 {
diff --git a/arch/powerpc/platforms/cell/spu_manage.c b/arch/powerpc/platforms/cell/spu_manage.c
index 74567b32c48c..f464a1f2e568 100644
--- a/arch/powerpc/platforms/cell/spu_manage.c
+++ b/arch/powerpc/platforms/cell/spu_manage.c
@@ -25,6 +25,7 @@
 
 #include "spufs/spufs.h"
 #include "interrupt.h"
+#include "spu_priv1_mmio.h"
 
 struct device_node *spu_devnode(struct spu *spu)
 {
diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
index 3f277a200fd8..018c30665e1b 100644
--- a/arch/powerpc/platforms/pasemi/pasemi.h
+++ b/arch/powerpc/platforms/pasemi/pasemi.h
@@ -4,6 +4,7 @@
 
 extern time64_t pas_get_boot_time(void);
 extern void pas_pci_init(void);
+struct pci_dev;
 extern void pas_pci_irq_fixup(struct pci_dev *dev);
 extern void pas_pci_dma_dev_setup(struct pci_dev *dev);
 
diff --git a/arch/powerpc/platforms/pasemi/time.c b/arch/powerpc/platforms/pasemi/time.c
index ad721882c8b6..70ac6db027d0 100644
--- a/arch/powerpc/platforms/pasemi/time.c
+++ b/arch/powerpc/platforms/pasemi/time.c
@@ -9,6 +9,8 @@
 
 #include <asm/time.h>
 
+#include "pasemi.h"
+
 time64_t __init pas_get_boot_time(void)
 {
 	/* Let's just return a fake date right now */
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index ed58928469b5..ed472b797e28 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -37,6 +37,8 @@
 #include <asm/pci-bridge.h>
 #include <asm/pmac_low_i2c.h>
 
+#include "pmac.h"
+
 #undef DEBUG_FEATURE
 
 #ifdef DEBUG_FEATURE