+ mips-add-missing-declarations-for-trap-handlers.patch added to mm-nonmm-unstable branch

+ mips-add-missing-declarations-for-trap-handlers.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mips: add missing declarations for trap handlers
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     mips-add-missing-declarations-for-trap-handlers.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mips-add-missing-declarations-for-trap-handlers.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Arnd Bergmann <arnd@arndb.de>
Subject: mips: add missing declarations for trap handlers
Date: Mon, 4 Dec 2023 12:56:53 +0100

These exception handlers are all called from assembly code, so they don't
normally need a declaration, but without one we now get warnings:

arch/mips/mm/fault.c:323:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:447:17: error: no previous prototype for 'do_be' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:752:17: error: no previous prototype for 'do_ov' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:874:17: error: no previous prototype for 'do_fpe' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1027:17: error: no previous prototype for 'do_bp' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1114:17: error: no previous prototype for 'do_tr' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1151:17: error: no previous prototype for 'do_ri' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1402:17: error: no previous prototype for 'do_cpu' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1507:17: error: no previous prototype for 'do_msa_fpe' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1527:17: error: no previous prototype for 'do_msa' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1548:17: error: no previous prototype for 'do_mdmx' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1560:17: error: no previous prototype for 'do_watch' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1587:17: error: no previous prototype for 'do_mcheck' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1612:17: error: no previous prototype for 'do_mt' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1648:17: error: no previous prototype for 'do_dsp' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1656:17: error: no previous prototype for 'do_reserved' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1832:17: error: no previous prototype for 'cache_parity_error' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1880:17: error: no previous prototype for 'do_ftlb' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1909:17: error: no previous prototype for 'do_gsexc' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1944:6: error: no previous prototype for 'ejtag_exception_handler' [-Werror=missing-prototypes]
arch/mips/kernel/traps.c:1989:17: error: no previous prototype for 'nmi_exception_handler' [-Werror=missing-prototypes]
arch/mips/kernel/unaligned.c:1516:17: error: no previous prototype for 'do_ade' [-Werror=missing-prototypes]

Link: https://lkml.kernel.org/r/20231204115710.2247097-4-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Stephen Rothwell <sfr@rothwell.id.au>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/mips/include/asm/traps.h |   24 ++++++++++++++++++++++++
 arch/mips/kernel/r4k-bugs64.c |    1 +
 arch/mips/kernel/unaligned.c  |    1 +
 arch/mips/mm/fault.c          |    1 +
 4 files changed, 27 insertions(+)

--- a/arch/mips/include/asm/traps.h~mips-add-missing-declarations-for-trap-handlers
+++ a/arch/mips/include/asm/traps.h
@@ -39,4 +39,28 @@ extern char except_vec_nmi[];
 	register_nmi_notifier(&fn##_nb);				\
 })
 
+asmlinkage void do_ade(struct pt_regs *regs);
+asmlinkage void do_be(struct pt_regs *regs);
+asmlinkage void do_ov(struct pt_regs *regs);
+asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31);
+asmlinkage void do_bp(struct pt_regs *regs);
+asmlinkage void do_tr(struct pt_regs *regs);
+asmlinkage void do_ri(struct pt_regs *regs);
+asmlinkage void do_cpu(struct pt_regs *regs);
+asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr);
+asmlinkage void do_msa(struct pt_regs *regs);
+asmlinkage void do_mdmx(struct pt_regs *regs);
+asmlinkage void do_watch(struct pt_regs *regs);
+asmlinkage void do_mcheck(struct pt_regs *regs);
+asmlinkage void do_mt(struct pt_regs *regs);
+asmlinkage void do_dsp(struct pt_regs *regs);
+asmlinkage void do_reserved(struct pt_regs *regs);
+asmlinkage void do_ftlb(void);
+asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1);
+asmlinkage void do_daddi_ov(struct pt_regs *regs);
+
+asmlinkage void cache_parity_error(void);
+asmlinkage void ejtag_exception_handler(struct pt_regs *regs);
+asmlinkage void __noreturn nmi_exception_handler(struct pt_regs *regs);
+
 #endif /* _ASM_TRAPS_H */
--- a/arch/mips/kernel/r4k-bugs64.c~mips-add-missing-declarations-for-trap-handlers
+++ a/arch/mips/kernel/r4k-bugs64.c
@@ -14,6 +14,7 @@
 #include <asm/fpu.h>
 #include <asm/mipsregs.h>
 #include <asm/setup.h>
+#include <asm/traps.h>
 
 static char bug64hit[] __initdata =
 	"reliable operation impossible!\n%s";
--- a/arch/mips/kernel/unaligned.c~mips-add-missing-declarations-for-trap-handlers
+++ a/arch/mips/kernel/unaligned.c
@@ -91,6 +91,7 @@
 #include <asm/inst.h>
 #include <asm/unaligned-emul.h>
 #include <asm/mmu_context.h>
+#include <asm/traps.h>
 #include <linux/uaccess.h>
 
 #include "access-helper.h"
--- a/arch/mips/mm/fault.c~mips-add-missing-declarations-for-trap-handlers
+++ a/arch/mips/mm/fault.c
@@ -26,6 +26,7 @@
 #include <asm/mmu_context.h>
 #include <asm/ptrace.h>
 #include <asm/highmem.h>		/* For VMALLOC_END */
+#include <asm/traps.h>
 #include <linux/kdebug.h>
 
 int show_unhandled_signals = 1;
_

Patches currently in -mm which might be from arnd@arndb.de are

kexec-fix-kexec_file-dependencies.patch
kexec-fix-kexec_file-dependencies-fix.patch
kexec-select-crypto-from-kexec_file-instead-of-depending-on-it.patch
arch-turn-off-werror-for-architectures-with-known-warnings.patch
mips-decompress-fix-add-missing-prototypes.patch
mips-add-asm-syscallsh-header.patch
mips-add-missing-declarations-for-trap-handlers.patch
mips-rs870e-stop-exporting-local-functions.patch
mips-signal-move-sigcontext-declarations-to-header.patch
mips-mark-local-function-static-if-possible.patch
mips-move-build_tlb_refill_handler-prototype.patch
mips-move-jump_label_apply_nops-declaration-to-header.patch
mips-unhide-uasm_in_compat_space_p-declaration.patch
mips-fix-setup_zero_pages-prototype.patch
mips-fix-tlb_init-prototype.patch
mips-move-cache-declarations-into-header.patch
mips-add-missing-declarations.patch
mips-spram-fix-missing-prototype-warning-for-spram_config.patch
mips-mt-include-asm-mips_mth.patch
mips-remove-extraneous-asm-generic-iomaph-include.patch
mips-suspend-include-linux-suspendh-as-needed.patch
mips-hide-conditionally-unused-functions.patch
mips-smp-fix-setup_profiling_timer-prototype.patch
mips-kexec-include-linux-rebooth.patch
ida-make-ida_dump-static.patch
jffs2-mark-__jffs2_dbg_superblock_counts-static.patch
sched-fair-move-unused-stub-functions-to-header.patch
x86-sta2x11-include-header-for-sta2x11_get_instance-prototype.patch
usb-fsl-mph-dr-of-mark-fsl_usb2_mpc5121_init-static.patch
makefileextrawarn-turn-on-missing-prototypes-globally.patch