[PATCH] efi: Fix comment for efi_mem_type() wrt absent physical addresses

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A previous commit f99afd08a45f ("efi: Update efi_mem_type() to return an
error rather than 0") changed the return type from EFI_RESERVED_TYPE to
-EINVAL when the searched physical address is not present in any memory
descriptor. But the comment preceding the function never changed. Lets
change the comment now to reflect the new return type -EINVAL.

Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: linux-efi@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
Changes in V2:

- Changed comment for efi_mem_type() instead of the return type per Ard

V1: (https://lore.kernel.org/patchwork/patch/1149002/)

 drivers/firmware/efi/efi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 77ca52d86e30..47b0bf7a2b7f 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -899,7 +899,7 @@ u64 efi_mem_attributes(unsigned long phys_addr)
  *
  * Search in the EFI memory map for the region covering @phys_addr.
  * Returns the EFI memory type if the region was found in the memory
- * map, EFI_RESERVED_TYPE (zero) otherwise.
+ * map, -EINVAL otherwise.
  */
 int efi_mem_type(unsigned long phys_addr)
 {
-- 
2.20.1




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