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| author | Badari Pulavarty <pbadari@us.ibm.com> | 2008-03-28 11:37:21 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-04-01 20:43:08 +1100 |
| commit | 52db9b44262754bad1b0456d27a862a46cc7f893 (patch) | |
| tree | 146cab5692c5bdc08ac18607e6e5f4626634ba7a /arch/powerpc/mm | |
| parent | 3faac21546f5b213cda490d45fe5927d713e44f1 (diff) | |
| download | blackbird-op-linux-52db9b44262754bad1b0456d27a862a46cc7f893.tar.gz blackbird-op-linux-52db9b44262754bad1b0456d27a862a46cc7f893.zip | |
[POWERPC] Add error return from htab_remove_mapping()
If the platform doesn't support hpte_removebolted(), gracefully
return failure rather than success.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index c2e5f61788b0..2f3dfcc7cdd3 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -192,7 +192,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend, return ret < 0 ? ret : 0; } -static void htab_remove_mapping(unsigned long vstart, unsigned long vend, +static int htab_remove_mapping(unsigned long vstart, unsigned long vend, int psize, int ssize) { unsigned long vaddr; @@ -202,12 +202,15 @@ static void htab_remove_mapping(unsigned long vstart, unsigned long vend, step = 1 << shift; if (!ppc_md.hpte_removebolted) { - printk("Sub-arch doesn't implement hpte_removebolted\n"); - return; + printk(KERN_WARNING "Platform doesn't implement " + "hpte_removebolted\n"); + return -EINVAL; } for (vaddr = vstart; vaddr < vend; vaddr += step) ppc_md.hpte_removebolted(vaddr, psize, ssize); + + return 0; } static int __init htab_dt_scan_seg_sizes(unsigned long node, @@ -454,9 +457,10 @@ void create_section_mapping(unsigned long start, unsigned long end) mmu_linear_psize, mmu_kernel_ssize)); } -void remove_section_mapping(unsigned long start, unsigned long end) +int remove_section_mapping(unsigned long start, unsigned long end) { - htab_remove_mapping(start, end, mmu_linear_psize, mmu_kernel_ssize); + return htab_remove_mapping(start, end, mmu_linear_psize, + mmu_kernel_ssize); } #endif /* CONFIG_MEMORY_HOTPLUG */ |
