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authorJan Kiszka <jan.kiszka@siemens.com>2020-10-26 20:39:06 +0300
committerBorislav Petkov <bp@suse.de>2021-04-14 09:21:41 +0300
commit16854b567dff767e5ec5e6dc23021271136733a5 (patch)
tree41a8fc54d9be75358325ffc17ef276d30f20c48b /arch/x86/mm/pat
parentf7b21a0e41171d22296b897dac6e4c41d2a3643c (diff)
downloadlinux-16854b567dff767e5ec5e6dc23021271136733a5.tar.xz
x86/pat: Do not compile stubbed functions when X86_PAT is off
Those are already provided by linux/io.h as stubs. The conflict remains invisible until someone would pull linux/io.h into memtype.c. This fixes a build error when this file is used outside of the kernel tree. [ bp: Massage commit message. ] Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/a9351615-7a0d-9d47-af65-d9e2fffe8192@siemens.com
Diffstat (limited to 'arch/x86/mm/pat')
-rw-r--r--arch/x86/mm/pat/memtype.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c
index 6084d1441209..3112ca7786ed 100644
--- a/arch/x86/mm/pat/memtype.c
+++ b/arch/x86/mm/pat/memtype.c
@@ -800,6 +800,7 @@ void memtype_free_io(resource_size_t start, resource_size_t end)
memtype_free(start, end);
}
+#ifdef CONFIG_X86_PAT
int arch_io_reserve_memtype_wc(resource_size_t start, resource_size_t size)
{
enum page_cache_mode type = _PAGE_CACHE_MODE_WC;
@@ -813,6 +814,7 @@ void arch_io_free_memtype_wc(resource_size_t start, resource_size_t size)
memtype_free_io(start, start + size);
}
EXPORT_SYMBOL(arch_io_free_memtype_wc);
+#endif
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot)