[Xen-devel] [PATCH v2 25/52] xen/common/efi/boot.c: let custom parameter parsing routines return errno

[Juergen Gross <jgross@xxxxxxxx>]

Modify the custom parameter parsing routines in:

xen/common/efi/boot.c

to indicate whether the parameter value was parsed successfully.

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/common/efi/boot.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c
index 11bdc7a2a4..25c249ae42 100644
--- a/xen/common/efi/boot.c
+++ b/xen/common/efi/boot.c
@@ -1306,7 +1306,7 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE 
*SystemTable)
 
 static bool __initdata efi_map_uc;
 
-static void __init parse_efi_param(char *s)
+static int __init parse_efi_param(char *s)
 {
     char *ss;
 
@@ -1329,9 +1329,13 @@ static void __init parse_efi_param(char *s)
         }
         else if ( !strcmp(s, "attr=uc") )
             efi_map_uc = val;
+        else
+            return -EINVAL;
 
         s = ss + 1;
     } while ( ss );
+
+    return 0;
 }
 custom_param("efi", parse_efi_param);
 
-- 
2.12.3


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