| Message ID | 20180525161051.187324-2-arnd@arndb.de |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] ARM: stm32: Don't select DMA unconditionally on STM32MP157C | expand |
Hi Arnd, On Fri, May 25, 2018 at 6:10 PM, Arnd Bergmann <arnd@arndb.de> wrote: > The secure_cntvoff_init() function is not available without CONFIG_SMP, > leading to a link error on shmobile: > > arch/arm/mach-shmobile/setup-rcar-gen2.o: In function `rcar_gen2_timer_init': > setup-rcar-gen2.c:(.init.text+0x18): undefined reference to `secure_cntvoff_init' > > From the description in commit 3fd45a136ff6 ("ARM: shmobile: rcar-gen2: > Make sure CNTVOFF is initialized on CA7/15"), I understand that we > don't need to call it on non-SMP builds because the boot CPU is always > initialized by common code, so we can simply avoid the reference by > checking for CONFIG_SMP. > > Fixes: cad160ed0a94 ("ARM: shmobile: Convert file to use cntvoff") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> NAKed-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- a/arch/arm/mach-shmobile/setup-rcar-gen2.c > +++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c > @@ -71,7 +71,8 @@ void __init rcar_gen2_timer_init(void) > void __iomem *base; > u32 freq; > > - secure_cntvoff_init(); > + if (IS_ENABLED(CONFIG_SMP)) > + secure_cntvoff_init(); The call here is for the boot CPU, since commit 9ce3fa6816c2fb59 ("ARM: shmobile: rcar-gen2: Add CA7 arch_timer initialization for r8a7794"), and modified and consolidated in commit 3fd45a136ff6 mentioned above. The call for secondary CPUs is in arch/arm/mach-shmobile/headsmp-apmu.S. > > if (of_machine_is_compatible("renesas,r8a7745") || > of_machine_is_compatible("renesas,r8a77470") || So the proper fix is to build arch/arm/common/secure_cntvoff.o unconditionally. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
diff --git a/arch/arm/mach-shmobile/setup-rcar-gen2.c b/arch/arm/mach-shmobile/setup-rcar-gen2.c index 88fdc1801d90..39085d7a8f37 100644 --- a/arch/arm/mach-shmobile/setup-rcar-gen2.c +++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c @@ -71,7 +71,8 @@ void __init rcar_gen2_timer_init(void) void __iomem *base; u32 freq; - secure_cntvoff_init(); + if (IS_ENABLED(CONFIG_SMP)) + secure_cntvoff_init(); if (of_machine_is_compatible("renesas,r8a7745") || of_machine_is_compatible("renesas,r8a77470") ||
The secure_cntvoff_init() function is not available without CONFIG_SMP, leading to a link error on shmobile: arch/arm/mach-shmobile/setup-rcar-gen2.o: In function `rcar_gen2_timer_init': setup-rcar-gen2.c:(.init.text+0x18): undefined reference to `secure_cntvoff_init' From the description in commit 3fd45a136ff6 ("ARM: shmobile: rcar-gen2: Make sure CNTVOFF is initialized on CA7/15"), I understand that we don't need to call it on non-SMP builds because the boot CPU is always initialized by common code, so we can simply avoid the reference by checking for CONFIG_SMP. Fixes: cad160ed0a94 ("ARM: shmobile: Convert file to use cntvoff") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm/mach-shmobile/setup-rcar-gen2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.9.0