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| author | Nishanth Menon <nm@ti.com> | 2013-06-26 09:39:47 -0500 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2013-07-04 05:10:51 -0700 |
| commit | 2abc75a8c52af5e9cd32223554e6071e07b44559 (patch) | |
| tree | 644cc1683ac6aa73506dad8a1a01fb8050505f6d /arch | |
| parent | b46355a920a3dbdce7365d2e39eefd6c7b87c22a (diff) | |
| download | linux-0-day-2abc75a8c52af5e9cd32223554e6071e07b44559.tar.gz linux-0-day-2abc75a8c52af5e9cd32223554e6071e07b44559.tar.xz | |
ARM: scu: provide inline dummy functions when SCU is not present
On platforms such as Cortex-A15 based OMAP5, SCU is not used, however
since much code is shared between Cortex-A9 based OMAP4 (which uses
SCU) and OMAP5, It does help to have inline functions returning error
values when SCU is not present on the platform.
arch/arm/mach-omap2/omap-smp.c which is common between OMAP4 and 5
handles the SCU usage only for OMAP4.
This fixes the following build failure with OMAP5 only build:
arch/arm/mach-omap2/built-in.o: In function `omap4_smp_init_cpus':
arch/arm/mach-omap2/omap-smp.c:185: undefined reference to `scu_get_core_count'
arch/arm/mach-omap2/built-in.o: In function `omap4_smp_prepare_cpus':
arch/arm/mach-omap2/omap-smp.c:211: undefined reference to `scu_enable'
Reported-by: Pekon Gupta <pekon@ti.com>
Reported-by: Vincent Stehlé <v-stehle@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/smp_scu.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/arm/include/asm/smp_scu.h b/arch/arm/include/asm/smp_scu.h index 18d1693736124..0393fbab8dd5f 100644 --- a/arch/arm/include/asm/smp_scu.h +++ b/arch/arm/include/asm/smp_scu.h @@ -23,10 +23,21 @@ static inline unsigned long scu_a9_get_base(void) return pa; } +#ifdef CONFIG_HAVE_ARM_SCU unsigned int scu_get_core_count(void __iomem *); int scu_power_mode(void __iomem *, unsigned int); +#else +static inline unsigned int scu_get_core_count(void __iomem *scu_base) +{ + return 0; +} +static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode) +{ + return -EINVAL; +} +#endif -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU) void scu_enable(void __iomem *scu_base); #else static inline void scu_enable(void __iomem *scu_base) {} |