[PATCH] csky: Fixup -Wmissing-prototypes warning

[PATCH] csky: Fixup -Wmissing-prototypes warning

[guoren]

From: Guo Ren <guoren@linux.alibaba.com>

Cleanup the warnings:

arch/csky/kernel/ptrace.c:320:16: error: no previous prototype for 'syscall_trace_enter' [-Werror=missing-prototypes]
arch/csky/kernel/ptrace.c:336:17: error: no previous prototype for 'syscall_trace_exit' [-Werror=missing-prototypes]
arch/csky/kernel/setup.c:116:34: error: no previous prototype for 'csky_start' [-Werror=missing-prototypes]
arch/csky/kernel/signal.c:255:17: error: no previous prototype for 'do_notify_resume' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:150:15: error: no previous prototype for 'do_trap_unknown' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:152:15: error: no previous prototype for 'do_trap_zdiv' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:154:15: error: no previous prototype for 'do_trap_buserr' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:157:17: error: no previous prototype for 'do_trap_misaligned' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:168:17: error: no previous prototype for 'do_trap_bkpt' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:187:17: error: no previous prototype for 'do_trap_illinsn' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:210:17: error: no previous prototype for 'do_trap_fpe' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:220:17: error: no previous prototype for 'do_trap_priv' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:230:17: error: no previous prototype for 'trap_c' [-Werror=missing-prototypes]
arch/csky/kernel/traps.c:57:13: error: no previous prototype for 'trap_init' [-Werror=missing-prototypes]
arch/csky/kernel/vdso/vgettimeofday.c:12:5: error: no previous prototype for '__vdso_clock_gettime64' [-Werror=missing-prototypes]
arch/csky/kernel/vdso/vgettimeofday.c:18:5: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes]
arch/csky/kernel/vdso/vgettimeofday.c:24:5: error: no previous prototype for '__vdso_clock_getres' [-Werror=missing-prototypes]
arch/csky/kernel/vdso/vgettimeofday.c:6:5: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes]
arch/csky/mm/fault.c:187:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]

Link: https://lore.kernel.org/lkml/20230810141947.1236730-17-arnd@kernel.org/
Reported-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
 arch/csky/include/asm/ptrace.h        |  2 ++
 arch/csky/include/asm/sections.h      |  2 ++
 arch/csky/include/asm/traps.h         | 15 +++++++++++++++
 arch/csky/kernel/vdso/vgettimeofday.c | 11 +++++++++++
 4 files changed, 30 insertions(+)

diff --git a/arch/csky/include/asm/ptrace.h b/arch/csky/include/asm/ptrace.h
index 4202aab6df42..0634b7895d81 100644
--- a/arch/csky/include/asm/ptrace.h
+++ b/arch/csky/include/asm/ptrace.h
@@ -96,5 +96,7 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
 	return *(unsigned long *)((unsigned long)regs + offset);
 }
 
+asmlinkage int syscall_trace_enter(struct pt_regs *regs);
+asmlinkage void syscall_trace_exit(struct pt_regs *regs);
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_CSKY_PTRACE_H */
diff --git a/arch/csky/include/asm/sections.h b/arch/csky/include/asm/sections.h
index 4192cba8445d..83e82b7c0f6c 100644
--- a/arch/csky/include/asm/sections.h
+++ b/arch/csky/include/asm/sections.h
@@ -7,4 +7,6 @@
 
 extern char _start[];
 
+asmlinkage void csky_start(unsigned int unused, void *dtb_start);
+
 #endif /* __ASM_SECTIONS_H */
diff --git a/arch/csky/include/asm/traps.h b/arch/csky/include/asm/traps.h
index 421a4195e2fe..1e7d303b91e9 100644
--- a/arch/csky/include/asm/traps.h
+++ b/arch/csky/include/asm/traps.h
@@ -40,4 +40,19 @@ do { \
 
 void csky_alignment(struct pt_regs *regs);
 
+asmlinkage void do_trap_unknown(struct pt_regs *regs);
+asmlinkage void do_trap_zdiv(struct pt_regs *regs);
+asmlinkage void do_trap_buserr(struct pt_regs *regs);
+asmlinkage void do_trap_misaligned(struct pt_regs *regs);
+asmlinkage void do_trap_bkpt(struct pt_regs *regs);
+asmlinkage void do_trap_illinsn(struct pt_regs *regs);
+asmlinkage void do_trap_fpe(struct pt_regs *regs);
+asmlinkage void do_trap_priv(struct pt_regs *regs);
+asmlinkage void trap_c(struct pt_regs *regs);
+
+asmlinkage void do_notify_resume(struct pt_regs *regs,
+			unsigned long thread_info_flags);
+
+void trap_init(void);
+
 #endif /* __ASM_CSKY_TRAPS_H */
diff --git a/arch/csky/kernel/vdso/vgettimeofday.c b/arch/csky/kernel/vdso/vgettimeofday.c
index da491832c098..c4831145eed5 100644
--- a/arch/csky/kernel/vdso/vgettimeofday.c
+++ b/arch/csky/kernel/vdso/vgettimeofday.c
@@ -3,24 +3,35 @@
 #include <linux/time.h>
 #include <linux/types.h>
 
+extern
+int __vdso_clock_gettime(clockid_t clock,
+			 struct old_timespec32 *ts);
 int __vdso_clock_gettime(clockid_t clock,
 			 struct old_timespec32 *ts)
 {
 	return __cvdso_clock_gettime32(clock, ts);
 }
 
+int __vdso_clock_gettime64(clockid_t clock,
+			   struct __kernel_timespec *ts);
 int __vdso_clock_gettime64(clockid_t clock,
 			   struct __kernel_timespec *ts)
 {
 	return __cvdso_clock_gettime(clock, ts);
 }
 
+extern
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz);
 int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
 			struct timezone *tz)
 {
 	return __cvdso_gettimeofday(tv, tz);
 }
 
+extern
+int __vdso_clock_getres(clockid_t clock_id,
+			struct old_timespec32 *res);
 int __vdso_clock_getres(clockid_t clock_id,
 			struct old_timespec32 *res)
 {
-- 
2.36.1

Re: [PATCH] csky: Fixup -Wmissing-prototypes warning

[Arnd Bergmann]

On Fri, Aug 11, 2023, at 05:07, guoren@kernel.org wrote:
>
> Link: https://lore.kernel.org/lkml/20230810141947.1236730-17-arnd@kernel.org/
> Reported-by: Arnd Bergmann <arnd@kernel.org>
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> Signed-off-by: Guo Ren <guoren@kernel.org>

Thanks for addressing these!

Reviewed-by: Arnd Bergmann <arnd@arndb.de>

> --- a/arch/csky/kernel/vdso/vgettimeofday.c
> +++ b/arch/csky/kernel/vdso/vgettimeofday.c
> @@ -3,24 +3,35 @@
>  #include <linux/time.h>
>  #include <linux/types.h>
> 
> +extern
> +int __vdso_clock_gettime(clockid_t clock,
> +			 struct old_timespec32 *ts);
>  int __vdso_clock_gettime(clockid_t clock,
>  			 struct old_timespec32 *ts)
>  {
>  	return __cvdso_clock_gettime32(clock, ts);
>  }
> 

This works, but it would be a bit nicer to move the
declarations into a header. I see that we already handle
this in three different ways across x86, arm and arm64,
and you picked method from x86 (and loongarch) here, so
I can't really complain.

What we should probably have instead is a new header
in include/vdso/ that  declares the functions for
every architecture.

      Arnd

Re: [PATCH] csky: Fixup -Wmissing-prototypes warning

[Guo Ren]

On Fri, Aug 11, 2023 at 3:33 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Fri, Aug 11, 2023, at 05:07, guoren@kernel.org wrote:
> >
> > Link: https://lore.kernel.org/lkml/20230810141947.1236730-17-arnd@kernel.org/
> > Reported-by: Arnd Bergmann <arnd@kernel.org>
> > Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren@kernel.org>
>
> Thanks for addressing these!
>
> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
>
> > --- a/arch/csky/kernel/vdso/vgettimeofday.c
> > +++ b/arch/csky/kernel/vdso/vgettimeofday.c
> > @@ -3,24 +3,35 @@
> >  #include <linux/time.h>
> >  #include <linux/types.h>
> >
> > +extern
> > +int __vdso_clock_gettime(clockid_t clock,
> > +                      struct old_timespec32 *ts);
> >  int __vdso_clock_gettime(clockid_t clock,
> >                        struct old_timespec32 *ts)
> >  {
> >       return __cvdso_clock_gettime32(clock, ts);
> >  }
> >
>
> This works, but it would be a bit nicer to move the
> declarations into a header. I see that we already handle
I know you concern, but I didn't find a proper header file. So I
copied riscv solution, let's solve that in riscv first, then csky
would follow up. Thx.

> this in three different ways across x86, arm and arm64,
> and you picked method from x86 (and loongarch) here, so
> I can't really complain.
>
> What we should probably have instead is a new header
> in include/vdso/ that  declares the functions for
> every architecture.
>
>       Arnd



-- 
Best Regards
 Guo Ren

Re: [PATCH] csky: Fixup -Wmissing-prototypes warning

[Guenter Roeck]

On Thu, Aug 10, 2023 at 11:07:50PM -0400, guoren@kernel.org wrote:
> From: Guo Ren <guoren@linux.alibaba.com>
> 
> Cleanup the warnings:
> 
> arch/csky/kernel/ptrace.c:320:16: error: no previous prototype for 'syscall_trace_enter' [-Werror=missing-prototypes]
> arch/csky/kernel/ptrace.c:336:17: error: no previous prototype for 'syscall_trace_exit' [-Werror=missing-prototypes]
> arch/csky/kernel/setup.c:116:34: error: no previous prototype for 'csky_start' [-Werror=missing-prototypes]
> arch/csky/kernel/signal.c:255:17: error: no previous prototype for 'do_notify_resume' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:150:15: error: no previous prototype for 'do_trap_unknown' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:152:15: error: no previous prototype for 'do_trap_zdiv' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:154:15: error: no previous prototype for 'do_trap_buserr' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:157:17: error: no previous prototype for 'do_trap_misaligned' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:168:17: error: no previous prototype for 'do_trap_bkpt' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:187:17: error: no previous prototype for 'do_trap_illinsn' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:210:17: error: no previous prototype for 'do_trap_fpe' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:220:17: error: no previous prototype for 'do_trap_priv' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:230:17: error: no previous prototype for 'trap_c' [-Werror=missing-prototypes]
> arch/csky/kernel/traps.c:57:13: error: no previous prototype for 'trap_init' [-Werror=missing-prototypes]
> arch/csky/kernel/vdso/vgettimeofday.c:12:5: error: no previous prototype for '__vdso_clock_gettime64' [-Werror=missing-prototypes]
> arch/csky/kernel/vdso/vgettimeofday.c:18:5: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes]
> arch/csky/kernel/vdso/vgettimeofday.c:24:5: error: no previous prototype for '__vdso_clock_getres' [-Werror=missing-prototypes]
> arch/csky/kernel/vdso/vgettimeofday.c:6:5: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes]
> arch/csky/mm/fault.c:187:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
> 
> Link: https://lore.kernel.org/lkml/20230810141947.1236730-17-arnd@kernel.org/
> Reported-by: Arnd Bergmann <arnd@kernel.org>
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> Signed-off-by: Guo Ren <guoren@kernel.org>

I get the following build errors in linux-next. Bisect points to this patch.

Building csky:defconfig ... failed
--------------
Error log:
In file included from arch/csky/include/asm/ptrace.h:7,
                 from arch/csky/include/asm/elf.h:6,
                 from include/linux/elf.h:6,
                 from kernel/extable.c:6:
arch/csky/include/asm/traps.h:43:11: error: expected ';' before 'void'
   43 | asmlinkage void do_trap_unknown(struct pt_regs *regs);
      |           ^~~~~

[ and many more similar errors ]

Guenter

---
# bad: [56585460cc2ec44fc5d66924f0a116f57080f0dc] Add linux-next specific files for 20230830
# good: [2dde18cd1d8fac735875f2e4987f11817cc0bc2c] Linux 6.5
git bisect start 'HEAD' 'v6.5'
# bad: [17582b16f00f2ca3f84f1c9dadef1529895ddd9a] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
git bisect bad 17582b16f00f2ca3f84f1c9dadef1529895ddd9a
# good: [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
git bisect good bd6c11bc43c496cddfc6cf603b5d45365606dbd5
# bad: [b22935905f9c5830bfd1c66ad3638ffdf6f80da7] Merge branch 'for-linux-next-fixes' of git://anongit.freedesktop.org/drm/drm-misc
git bisect bad b22935905f9c5830bfd1c66ad3638ffdf6f80da7
# good: [692f5510159c79bfa312a4e27a15e266232bfb4c] Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
git bisect good 692f5510159c79bfa312a4e27a15e266232bfb4c
# good: [b91742d84d29c39b643992b95560cfb7337eab18] mm/shmem.c: use helper macro K()
git bisect good b91742d84d29c39b643992b95560cfb7337eab18
# good: [19134bc23500a01bfdb77a804fc8e4bf8808d0cc] mm: fix kernel-doc warning from tlb_flush_rmaps()
git bisect good 19134bc23500a01bfdb77a804fc8e4bf8808d0cc
# bad: [858e6c6fd1960650c6a44b8158e1ac26ee63e26d] Merge branch 'for-curr' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git
git bisect bad 858e6c6fd1960650c6a44b8158e1ac26ee63e26d
# bad: [9d6b14cd1e993d2ff98df0cef6d935ce6fd4dbec] Merge tag 'flex-array-transformations-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
git bisect bad 9d6b14cd1e993d2ff98df0cef6d935ce6fd4dbec
# good: [3b425dd2aeb8c876805a4cc29d84a6c455b43530] parisc: led: Move register_led_regions() to late_initcall()
git bisect good 3b425dd2aeb8c876805a4cc29d84a6c455b43530
# good: [48d25d382643a9d8867f8eb13af231268ab10db5] Merge tag 'parisc-for-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
git bisect good 48d25d382643a9d8867f8eb13af231268ab10db5
# bad: [c8171a86b27401aa1f492dd1f080f3102264f1ab] csky: Fixup -Wmissing-prototypes warning
git bisect bad c8171a86b27401aa1f492dd1f080f3102264f1ab
# good: [1362d15ffb59db65b2df354b548b7915686cb05c] csky: pgtable: Invalidate stale I-cache lines in update_mmu_cache
git bisect good 1362d15ffb59db65b2df354b548b7915686cb05c
# good: [c1884e1e116409dafce84df38134aa2d7cdb719d] csky: Make pfn accessors static inlines
git bisect good c1884e1e116409dafce84df38134aa2d7cdb719d
# first bad commit: [c8171a86b27401aa1f492dd1f080f3102264f1ab] csky: Fixup -Wmissing-prototypes warning

Re: [PATCH] csky: Fixup -Wmissing-prototypes warning

[Guo Ren]

On Wed, Aug 30, 2023 at 4:11 PM Guenter Roeck <linux@roeck-us.net> wrote:
>
> On Thu, Aug 10, 2023 at 11:07:50PM -0400, guoren@kernel.org wrote:
> > From: Guo Ren <guoren@linux.alibaba.com>
> >
> > Cleanup the warnings:
> >
> > arch/csky/kernel/ptrace.c:320:16: error: no previous prototype for 'syscall_trace_enter' [-Werror=missing-prototypes]
> > arch/csky/kernel/ptrace.c:336:17: error: no previous prototype for 'syscall_trace_exit' [-Werror=missing-prototypes]
> > arch/csky/kernel/setup.c:116:34: error: no previous prototype for 'csky_start' [-Werror=missing-prototypes]
> > arch/csky/kernel/signal.c:255:17: error: no previous prototype for 'do_notify_resume' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:150:15: error: no previous prototype for 'do_trap_unknown' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:152:15: error: no previous prototype for 'do_trap_zdiv' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:154:15: error: no previous prototype for 'do_trap_buserr' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:157:17: error: no previous prototype for 'do_trap_misaligned' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:168:17: error: no previous prototype for 'do_trap_bkpt' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:187:17: error: no previous prototype for 'do_trap_illinsn' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:210:17: error: no previous prototype for 'do_trap_fpe' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:220:17: error: no previous prototype for 'do_trap_priv' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:230:17: error: no previous prototype for 'trap_c' [-Werror=missing-prototypes]
> > arch/csky/kernel/traps.c:57:13: error: no previous prototype for 'trap_init' [-Werror=missing-prototypes]
> > arch/csky/kernel/vdso/vgettimeofday.c:12:5: error: no previous prototype for '__vdso_clock_gettime64' [-Werror=missing-prototypes]
> > arch/csky/kernel/vdso/vgettimeofday.c:18:5: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes]
> > arch/csky/kernel/vdso/vgettimeofday.c:24:5: error: no previous prototype for '__vdso_clock_getres' [-Werror=missing-prototypes]
> > arch/csky/kernel/vdso/vgettimeofday.c:6:5: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes]
> > arch/csky/mm/fault.c:187:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
> >
> > Link: https://lore.kernel.org/lkml/20230810141947.1236730-17-arnd@kernel.org/
> > Reported-by: Arnd Bergmann <arnd@kernel.org>
> > Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren@kernel.org>
>
> I get the following build errors in linux-next. Bisect points to this patch.
I missed this:

diff --git a/arch/csky/include/asm/traps.h b/arch/csky/include/asm/traps.h
index 1e7d303b91e9..732c4aaa2e26 100644
--- a/arch/csky/include/asm/traps.h
+++ b/arch/csky/include/asm/traps.h
@@ -3,6 +3,8 @@
 #ifndef __ASM_CSKY_TRAPS_H
 #define __ASM_CSKY_TRAPS_H

+#include <linux/linkage.h>
+
 #define VEC_RESET      0
 #define VEC_ALIGN      1
 #define VEC_ACCESS     2

Sorry, I would send another pull request to fixup mainline code.

>
> Building csky:defconfig ... failed
> --------------
> Error log:
> In file included from arch/csky/include/asm/ptrace.h:7,
>                  from arch/csky/include/asm/elf.h:6,
>                  from include/linux/elf.h:6,
>                  from kernel/extable.c:6:
> arch/csky/include/asm/traps.h:43:11: error: expected ';' before 'void'
>    43 | asmlinkage void do_trap_unknown(struct pt_regs *regs);
>       |           ^~~~~
>
> [ and many more similar errors ]
>
> Guenter
>
> ---
> # bad: [56585460cc2ec44fc5d66924f0a116f57080f0dc] Add linux-next specific files for 20230830
> # good: [2dde18cd1d8fac735875f2e4987f11817cc0bc2c] Linux 6.5
> git bisect start 'HEAD' 'v6.5'
> # bad: [17582b16f00f2ca3f84f1c9dadef1529895ddd9a] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
> git bisect bad 17582b16f00f2ca3f84f1c9dadef1529895ddd9a
> # good: [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
> git bisect good bd6c11bc43c496cddfc6cf603b5d45365606dbd5
> # bad: [b22935905f9c5830bfd1c66ad3638ffdf6f80da7] Merge branch 'for-linux-next-fixes' of git://anongit.freedesktop.org/drm/drm-misc
> git bisect bad b22935905f9c5830bfd1c66ad3638ffdf6f80da7
> # good: [692f5510159c79bfa312a4e27a15e266232bfb4c] Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
> git bisect good 692f5510159c79bfa312a4e27a15e266232bfb4c
> # good: [b91742d84d29c39b643992b95560cfb7337eab18] mm/shmem.c: use helper macro K()
> git bisect good b91742d84d29c39b643992b95560cfb7337eab18
> # good: [19134bc23500a01bfdb77a804fc8e4bf8808d0cc] mm: fix kernel-doc warning from tlb_flush_rmaps()
> git bisect good 19134bc23500a01bfdb77a804fc8e4bf8808d0cc
> # bad: [858e6c6fd1960650c6a44b8158e1ac26ee63e26d] Merge branch 'for-curr' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git
> git bisect bad 858e6c6fd1960650c6a44b8158e1ac26ee63e26d
> # bad: [9d6b14cd1e993d2ff98df0cef6d935ce6fd4dbec] Merge tag 'flex-array-transformations-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
> git bisect bad 9d6b14cd1e993d2ff98df0cef6d935ce6fd4dbec
> # good: [3b425dd2aeb8c876805a4cc29d84a6c455b43530] parisc: led: Move register_led_regions() to late_initcall()
> git bisect good 3b425dd2aeb8c876805a4cc29d84a6c455b43530
> # good: [48d25d382643a9d8867f8eb13af231268ab10db5] Merge tag 'parisc-for-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
> git bisect good 48d25d382643a9d8867f8eb13af231268ab10db5
> # bad: [c8171a86b27401aa1f492dd1f080f3102264f1ab] csky: Fixup -Wmissing-prototypes warning
> git bisect bad c8171a86b27401aa1f492dd1f080f3102264f1ab
> # good: [1362d15ffb59db65b2df354b548b7915686cb05c] csky: pgtable: Invalidate stale I-cache lines in update_mmu_cache
> git bisect good 1362d15ffb59db65b2df354b548b7915686cb05c
> # good: [c1884e1e116409dafce84df38134aa2d7cdb719d] csky: Make pfn accessors static inlines
> git bisect good c1884e1e116409dafce84df38134aa2d7cdb719d
> # first bad commit: [c8171a86b27401aa1f492dd1f080f3102264f1ab] csky: Fixup -Wmissing-prototypes warning



-- 
Best Regards
 Guo Ren