[PATCH 3/4] x86/mm/pat: Fix W=1 build kernel-doc warning

[Shivank Garg <shivankg@amd.com>]

Building the kernel with W=1 generates the following warning:
arch/x86/mm/pat/memtype.c:692: warning: Function parameter or struct member 'pfn' not described in 'pat_pfn_immune_to_uc_mtrr'

Add missing parameter documentation to fix the kernel-doc warning.

Signed-off-by: Shivank Garg <shivankg@amd.com>
---
 arch/x86/mm/pat/memtype.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c
index 72d8cbc61158..51635ae1eb7f 100644
--- a/arch/x86/mm/pat/memtype.c
+++ b/arch/x86/mm/pat/memtype.c
@@ -682,6 +682,7 @@ static enum page_cache_mode lookup_memtype(u64 paddr)
 /**
  * pat_pfn_immune_to_uc_mtrr - Check whether the PAT memory type
  * of @pfn cannot be overridden by UC MTRR memory type.
+ * @pfn: The page frame number to check.
  *
  * Only to be called when PAT is enabled.
  *
-- 
2.34.1