Re: [PATCH v6 3/3] ARM: mm: use static_vm for managing static mapped areas

[Arnd Bergmann]

On Wednesday 06 February 2013, Joonsoo Kim wrote:
> @@ -859,17 +864,12 @@ static void __init pci_reserve_io(void)
>  {
>  	struct vm_struct *vm;
>  	unsigned long addr;
> +	struct static_vm *svm;
>  
> -	/* we're still single threaded hence no lock needed here */
> -	for (vm = vmlist; vm; vm = vm->next) {
> -		if (!(vm->flags & VM_ARM_STATIC_MAPPING))
> -			continue;
> -		addr = (unsigned long)vm->addr;
> -		addr &= ~(SZ_2M - 1);
> -		if (addr == PCI_IO_VIRT_BASE)
> -			return;
> +	svm = find_static_vm_vaddr((void *)PCI_IO_VIRT_BASE);
> +	if (svm)
> +		return;
>  
> -	}

This is causing build warnings in a bunch of configurations now,
see patch below.

	Arnd

8<-----
ARM: mm: remove unused variables in pci_reserve_io

Patch "ARM: 7646/1: mm: use static_vm for managing static mapped areas"
removed code from pci_reserve_io but left variable declarations
in place that are now unused, as gcc correctly warns.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index c6fe15a..c6d45c8 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -901,8 +901,6 @@ static void __init fill_pmd_gaps(void)
 #if defined(CONFIG_PCI) && !defined(CONFIG_NEED_MACH_IO_H)
 static void __init pci_reserve_io(void)
 {
-	struct vm_struct *vm;
-	unsigned long addr;
 	struct static_vm *svm;
 
 	svm = find_static_vm_vaddr((void *)PCI_IO_VIRT_BASE);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/