diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2018-01-08 14:21:49 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2018-01-21 15:32:25 +0000 |
| commit | a5281feafd7b1e352c1472143dcbc05ba30cfb1c (patch) | |
| tree | 675cd76544b629175bea996db6cbda7575a79ef6 /arch/arm/mm/cache-b15-rac.c | |
| parent | 636e645f1f2a5826beacd23548696f1655b0b5d8 (diff) | |
ARM: 8741/1: B15: fix unused label warnings
The new conditionally compiled code leaves some labels and one
variable unreferenced when CONFIG_HOTPLUG_CPU and CONFIG_PM_SLEEP
are disabled:
arch/arm/mm/cache-b15-rac.c: In function 'b15_rac_init':
arch/arm/mm/cache-b15-rac.c:353:1: error: label 'out_unmap' defined but not used [-Werror=unused-label]
out_unmap:
^~~~~~~~~
arch/arm/mm/cache-b15-rac.c:351:1: error: label 'out_cpu_dead' defined but not used [-Werror=unused-label]
out_cpu_dead:
^~~~~~~~~~~~
At top level:
arch/arm/mm/cache-b15-rac.c:53:12: error: 'rac_config0_reg' defined but not used [-Werror=unused-variable]
This replaces the existing #ifdef conditionals with IS_ENABLED()
checks that let the compiler figure out for itself which code to
drop.
Fixes: 55de88778f4b ("ARM: 8726/1: B15: Add CPU hotplug awareness")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm/cache-b15-rac.c')
| -rw-r--r-- | arch/arm/mm/cache-b15-rac.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/arch/arm/mm/cache-b15-rac.c b/arch/arm/mm/cache-b15-rac.c index f76988790011..d9586ba2e63c 100644 --- a/arch/arm/mm/cache-b15-rac.c +++ b/arch/arm/mm/cache-b15-rac.c @@ -50,6 +50,7 @@ extern void v7_flush_kern_cache_all(void); static void __iomem *b15_rac_base; static DEFINE_SPINLOCK(rac_lock); + static u32 rac_config0_reg; /* Initialization flag to avoid checking for b15_rac_base, and to prevent @@ -175,7 +176,6 @@ static struct notifier_block b15_rac_reboot_nb = { .notifier_call = b15_rac_reboot_notifier, }; -#ifdef CONFIG_HOTPLUG_CPU /* The CPU hotplug case is the most interesting one, we basically need to make * sure that the RAC is disabled for the entire system prior to having a CPU * die, in particular prior to this dying CPU having exited the coherency @@ -253,9 +253,7 @@ static int b15_rac_dead_cpu(unsigned int cpu) return 0; } -#endif /* CONFIG_HOTPLUG_CPU */ -#ifdef CONFIG_PM_SLEEP static int b15_rac_suspend(void) { /* Suspend the read-ahead cache oeprations, forcing our cache @@ -286,7 +284,6 @@ static struct syscore_ops b15_rac_syscore_ops = { .suspend = b15_rac_suspend, .resume = b15_rac_resume, }; -#endif static int __init b15_rac_init(void) { @@ -315,23 +312,22 @@ static int __init b15_rac_init(void) goto out; } -#ifdef CONFIG_HOTPLUG_CPU - ret = cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CACHE_B15_RAC_DEAD, + if (IS_ENABLED(CONFIG_HOTPLUG_CPU)) { + ret = cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CACHE_B15_RAC_DEAD, "arm/cache-b15-rac:dead", NULL, b15_rac_dead_cpu); - if (ret) - goto out_unmap; + if (ret) + goto out_unmap; - ret = cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CACHE_B15_RAC_DYING, + ret = cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CACHE_B15_RAC_DYING, "arm/cache-b15-rac:dying", NULL, b15_rac_dying_cpu); - if (ret) - goto out_cpu_dead; -#endif + if (ret) + goto out_cpu_dead; + } -#ifdef CONFIG_PM_SLEEP - register_syscore_ops(&b15_rac_syscore_ops); -#endif + if (IS_ENABLED(CONFIG_PM_SLEEP)) + register_syscore_ops(&b15_rac_syscore_ops); spin_lock(&rac_lock); reg = __raw_readl(b15_rac_base + RAC_CONFIG0_REG); |