| Message ID | 20210805075032.723037-2-lee.jones@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | power: reset: Convert Power-Off driver to tristate | expand |
On Thu, Aug 05, 2021 at 08:50:30AM +0100, Lee Jones wrote: > A recent attempt to convert the Power Reset Restart driver to tristate > failed because of the following compile error (reported once merged by > Stephen Rothwell via Linux Next): > > ERROR: "machine_restart" [drivers/power/reset/restart-poweroff.ko] undefined! > > This error occurs since some of the machine_restart() instances are > not currently exported for use in modules. This patch aims to rectify > that. > > Cc: Vineet Gupta <vgupta@synopsys.com> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Guo Ren <guoren@kernel.org> > Cc: Yoshinori Sato <ysato@users.sourceforge.jp> > Cc: Brian Cain <bcain@codeaurora.org> > Cc: Geert Uytterhoeven <geert@linux-m68k.org> > Cc: Michal Simek <monstr@monstr.eu> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> > Cc: John Crispin <john@phrozen.org> > Cc: Ley Foon Tan <ley.foon.tan@intel.com> > Cc: Jonas Bonn <jonas@southpole.se> > Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> > Cc: Stafford Horne <shorne@gmail.com> > Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> > Cc: Helge Deller <deller@gmx.de> > Cc: Michael Ellerman <mpe@ellerman.id.au> > Cc: Paul Walmsley <paul.walmsley@sifive.com> > Cc: Palmer Dabbelt <palmer@dabbelt.com> > Cc: Albert Ou <aou@eecs.berkeley.edu> > Cc: Heiko Carstens <hca@linux.ibm.com> > Cc: Vasily Gorbik <gor@linux.ibm.com> > Cc: Christian Borntraeger <borntraeger@de.ibm.com> > Cc: Rich Felker <dalias@libc.org> > Cc: David S. Miller <davem@davemloft.net> > Cc: Jeff Dike <jdike@addtoit.com> > Cc: Richard Weinberger <richard@nod.at> > Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Chris Zankel <chris@zankel.net> > Cc: Max Filippov <jcmvbkbc@gmail.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Sebastian Reichel <sre@kernel.org> > Cc: linux-snps-arc@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-csky@vger.kernel.org > Cc: uclinux-h8-devel@lists.sourceforge.jp > Cc: linux-hexagon@vger.kernel.org > Cc: linux-m68k@lists.linux-m68k.org > Cc: linux-mips@vger.kernel.org > Cc: openrisc@lists.librecores.org > Cc: linux-parisc@vger.kernel.org > Cc: linuxppc-dev@lists.ozlabs.org > Cc: linux-riscv@lists.infradead.org > Cc: linux-s390@vger.kernel.org > Cc: linux-sh@vger.kernel.org > Cc: sparclinux@vger.kernel.org > Cc: linux-um@lists.infradead.org > Cc: linux-xtensa@linux-xtensa.org > Signed-off-by: Lee Jones <lee.jones@linaro.org> > --- > > The 2 patches this change supports have the required Acks already. > > NB: If it's safe to omit some of these, let me know and I'll revise the patch. > > [...] > arch/mips/kernel/reset.c | 1 + > arch/mips/lantiq/falcon/reset.c | 1 + > arch/mips/sgi-ip27/ip27-reset.c | 1 + Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
On Thu, Aug 05, 2021 at 08:50:30AM +0100, Lee Jones wrote: > diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c > index b4bb67f17a2ca..cf89ce91d7145 100644 > --- a/arch/arm64/kernel/process.c > +++ b/arch/arm64/kernel/process.c > @@ -212,6 +212,7 @@ void machine_restart(char *cmd) > printk("Reboot failed -- System halted\n"); > while (1); > } > +EXPORT_SYMBOL(machine_restart); Should we make this EXPORT_SYMBOL_GPL? I suppose it's not for general use by out of tree drivers and it matches the other pm_power_off symbol we export in this file. Either way: Acked-by: Catalin Marinas <catalin.marinas@arm.com>
On Thu, Aug 05, 2021 at 06:36:25PM +0100, Catalin Marinas wrote: > On Thu, Aug 05, 2021 at 08:50:30AM +0100, Lee Jones wrote: > > diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c > > index b4bb67f17a2ca..cf89ce91d7145 100644 > > --- a/arch/arm64/kernel/process.c > > +++ b/arch/arm64/kernel/process.c > > @@ -212,6 +212,7 @@ void machine_restart(char *cmd) > > printk("Reboot failed -- System halted\n"); > > while (1); > > } > > +EXPORT_SYMBOL(machine_restart); > > Should we make this EXPORT_SYMBOL_GPL? I suppose it's not for general > use by out of tree drivers and it matches the other pm_power_off symbol > we export in this file. Yes please.
On Thu, 05 Aug 2021, Greg Kroah-Hartman wrote: > On Thu, Aug 05, 2021 at 06:36:25PM +0100, Catalin Marinas wrote: > > On Thu, Aug 05, 2021 at 08:50:30AM +0100, Lee Jones wrote: > > > diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c > > > index b4bb67f17a2ca..cf89ce91d7145 100644 > > > --- a/arch/arm64/kernel/process.c > > > +++ b/arch/arm64/kernel/process.c > > > @@ -212,6 +212,7 @@ void machine_restart(char *cmd) > > > printk("Reboot failed -- System halted\n"); > > > while (1); > > > } > > > +EXPORT_SYMBOL(machine_restart); > > > > Should we make this EXPORT_SYMBOL_GPL? I suppose it's not for general > > use by out of tree drivers and it matches the other pm_power_off symbol > > we export in this file. > > Yes please. Sure. Thanks for the feedback.
diff --git a/arch/arc/kernel/reset.c b/arch/arc/kernel/reset.c index fd6c3eb930bad..ae4f8a43b0af4 100644 --- a/arch/arc/kernel/reset.c +++ b/arch/arc/kernel/reset.c @@ -20,6 +20,7 @@ void machine_restart(char *__unused) pr_info("Put your restart handler here\n"); machine_halt(); } +EXPORT_SYMBOL(machine_restart); void machine_power_off(void) { diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c index 0ce388f154226..2878260efd130 100644 --- a/arch/arm/kernel/reboot.c +++ b/arch/arm/kernel/reboot.c @@ -150,3 +150,4 @@ void machine_restart(char *cmd) printk("Reboot failed -- System halted\n"); while (1); } +EXPORT_SYMBOL(machine_restart); diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index b4bb67f17a2ca..cf89ce91d7145 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -212,6 +212,7 @@ void machine_restart(char *cmd) printk("Reboot failed -- System halted\n"); while (1); } +EXPORT_SYMBOL(machine_restart); #define bstr(suffix, str) [PSR_BTYPE_ ## suffix >> PSR_BTYPE_SHIFT] = str static const char *const btypes[] = { diff --git a/arch/csky/kernel/power.c b/arch/csky/kernel/power.c index 923ee4e381b81..b466c825cbb3c 100644 --- a/arch/csky/kernel/power.c +++ b/arch/csky/kernel/power.c @@ -28,3 +28,4 @@ void machine_restart(char *cmd) do_kernel_restart(cmd); asm volatile ("bkpt"); } +EXPORT_SYMBOL(machine_restart); diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index 46b1342ce515b..8203ac5cd33ec 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -66,6 +66,7 @@ void machine_restart(char *__unused) local_irq_disable(); __asm__("jmp @@0"); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/hexagon/kernel/reset.c b/arch/hexagon/kernel/reset.c index da36114d928f0..433378d52063c 100644 --- a/arch/hexagon/kernel/reset.c +++ b/arch/hexagon/kernel/reset.c @@ -19,6 +19,7 @@ void machine_halt(void) void machine_restart(char *cmd) { } +EXPORT_SYMBOL(machine_restart); void (*pm_power_off)(void) = NULL; EXPORT_SYMBOL(pm_power_off); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index da83cc83e7912..e0264704686e9 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -57,6 +57,7 @@ void machine_restart(char * __unused) mach_reset(); for (;;); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/microblaze/kernel/reset.c b/arch/microblaze/kernel/reset.c index 5f4722908164d..902fbe3777846 100644 --- a/arch/microblaze/kernel/reset.c +++ b/arch/microblaze/kernel/reset.c @@ -41,3 +41,4 @@ void machine_restart(char *cmd) pr_emerg("Reboot failed -- System halted\n"); while (1); } +EXPORT_SYMBOL(machine_restart); diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c index 6288780b779e7..2d3193a3cf68b 100644 --- a/arch/mips/kernel/reset.c +++ b/arch/mips/kernel/reset.c @@ -99,6 +99,7 @@ void machine_restart(char *command) pr_emerg("Reboot failed -- System halted\n"); machine_hang(); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/mips/lantiq/falcon/reset.c b/arch/mips/lantiq/falcon/reset.c index 261996c230cf6..80dd9759ffa55 100644 --- a/arch/mips/lantiq/falcon/reset.c +++ b/arch/mips/lantiq/falcon/reset.c @@ -51,6 +51,7 @@ static void machine_restart(char *command) (void *)WDT_REG_BASE); unreachable(); } +EXPORT_SYMBOL(machine_restart); static void machine_halt(void) { diff --git a/arch/mips/sgi-ip27/ip27-reset.c b/arch/mips/sgi-ip27/ip27-reset.c index 5ac5ad6387343..a3f8f4498b7c5 100644 --- a/arch/mips/sgi-ip27/ip27-reset.c +++ b/arch/mips/sgi-ip27/ip27-reset.c @@ -29,6 +29,7 @@ #include "ip27-common.h" void machine_restart(char *command) __noreturn; +EXPORT_SYMBOL(machine_restart); void machine_halt(void) __noreturn; void machine_power_off(void) __noreturn; diff --git a/arch/nios2/kernel/process.c b/arch/nios2/kernel/process.c index c5f916ca6845f..6f9459e8ae4ed 100644 --- a/arch/nios2/kernel/process.c +++ b/arch/nios2/kernel/process.c @@ -51,6 +51,7 @@ void machine_restart(char *__unused) : "r" (cpuinfo.reset_addr) : "r4"); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index eb62429681fc8..12c3022c46387 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -61,6 +61,7 @@ void machine_restart(char *cmd) pr_emerg("Reboot failed -- System halted\n"); while (1); } +EXPORT_SYMBOL(machine_restart); /* * Similar to machine_power_off, but don't shut off power. Add code diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index b144fbe29bc16..05e9f03124b64 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -96,6 +96,7 @@ void machine_restart(char *cmd) while (1) ; } +EXPORT_SYMBOL(machine_restart); void (*chassis_power_off)(void); diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 74a98fff2c2f9..54ebae540dd7d 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -159,6 +159,7 @@ void machine_restart(char *cmd) machine_hang(); } +EXPORT_SYMBOL(machine_restart); void machine_power_off(void) { diff --git a/arch/riscv/kernel/reset.c b/arch/riscv/kernel/reset.c index ee5878d968cc1..596a36b91eaa2 100644 --- a/arch/riscv/kernel/reset.c +++ b/arch/riscv/kernel/reset.c @@ -20,6 +20,7 @@ void machine_restart(char *cmd) do_kernel_restart(cmd); while (1); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 5aab59ad56881..fd2394af0d43a 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -276,6 +276,7 @@ void machine_restart(char *command) console_unblank(); _machine_restart(command); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c index 5c33f036418be..36b6c61f3b129 100644 --- a/arch/sh/kernel/reboot.c +++ b/arch/sh/kernel/reboot.c @@ -83,6 +83,7 @@ void machine_restart(char *cmd) { machine_ops.restart(cmd); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) { diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 3b9794978e5bc..30a1674683946 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -104,6 +104,7 @@ void machine_restart(char * cmd) prom_feval ("reset"); panic("Reboot failed!"); } +EXPORT_SYMBOL(machine_restart); void machine_power_off(void) { diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c index 69c1b6c047d53..53adef425d7de 100644 --- a/arch/sparc/kernel/reboot.c +++ b/arch/sparc/kernel/reboot.c @@ -52,4 +52,5 @@ void machine_restart(char *cmd) prom_reboot(""); panic("Reboot failed!"); } +EXPORT_SYMBOL(machine_restart); diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c index 48c0610d506e0..4b764311efb89 100644 --- a/arch/um/kernel/reboot.c +++ b/arch/um/kernel/reboot.c @@ -47,6 +47,7 @@ void machine_restart(char * __unused) uml_cleanup(); reboot_skas(); } +EXPORT_SYMBOL(machine_restart); void machine_power_off(void) { diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index b29657b76e3fa..b48c30ead7167 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -733,6 +733,7 @@ static void native_machine_restart(char *__unused) machine_shutdown(); __machine_emergency_restart(0); } +EXPORT_SYMBOL(machine_restart); static void native_machine_halt(void) { diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index ed184106e4cf9..a84cc934300d5 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -564,6 +564,7 @@ void machine_restart(char * cmd) { platform_restart(); } +EXPORT_SYMBOL(machine_restart); void machine_halt(void) {
A recent attempt to convert the Power Reset Restart driver to tristate failed because of the following compile error (reported once merged by Stephen Rothwell via Linux Next): ERROR: "machine_restart" [drivers/power/reset/restart-poweroff.ko] undefined! This error occurs since some of the machine_restart() instances are not currently exported for use in modules. This patch aims to rectify that. Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Brian Cain <bcain@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: John Crispin <john@phrozen.org> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Rich Felker <dalias@libc.org> Cc: David S. Miller <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Sebastian Reichel <sre@kernel.org> Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-csky@vger.kernel.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-hexagon@vger.kernel.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-mips@vger.kernel.org Cc: openrisc@lists.librecores.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Lee Jones <lee.jones@linaro.org> --- The 2 patches this change supports have the required Acks already. NB: If it's safe to omit some of these, let me know and I'll revise the patch. arch/arc/kernel/reset.c | 1 + arch/arm/kernel/reboot.c | 1 + arch/arm64/kernel/process.c | 1 + arch/csky/kernel/power.c | 1 + arch/h8300/kernel/process.c | 1 + arch/hexagon/kernel/reset.c | 1 + arch/m68k/kernel/process.c | 1 + arch/microblaze/kernel/reset.c | 1 + arch/mips/kernel/reset.c | 1 + arch/mips/lantiq/falcon/reset.c | 1 + arch/mips/sgi-ip27/ip27-reset.c | 1 + arch/nios2/kernel/process.c | 1 + arch/openrisc/kernel/process.c | 1 + arch/parisc/kernel/process.c | 1 + arch/powerpc/kernel/setup-common.c | 1 + arch/riscv/kernel/reset.c | 1 + arch/s390/kernel/setup.c | 1 + arch/sh/kernel/reboot.c | 1 + arch/sparc/kernel/process_32.c | 1 + arch/sparc/kernel/reboot.c | 1 + arch/um/kernel/reboot.c | 1 + arch/x86/kernel/reboot.c | 1 + arch/xtensa/kernel/setup.c | 1 + 23 files changed, 23 insertions(+)