[Xen-devel] [PATCH 23/52] xen/common/core_parking.c: let custom parameter parsing routines return errno

[Juergen Gross <jgross@xxxxxxxx>]

Modify the custom parameter parsing routines in:

xen/common/core_parking.c

to indicate whether the parameter value was parsed successfully.

Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Cc: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Tim Deegan <tim@xxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/common/core_parking.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/xen/common/core_parking.c b/xen/common/core_parking.c
index de269e06c2..b07a157ff9 100644
--- a/xen/common/core_parking.c
+++ b/xen/common/core_parking.c
@@ -41,14 +41,16 @@ static enum core_parking_controller {
     PERFORMANCE_FIRST
 } core_parking_controller = POWER_FIRST;
 
-static void __init setup_core_parking_option(char *str)
+static int __init setup_core_parking_option(char *str)
 {
     if ( !strcmp(str, "power") )
         core_parking_controller = POWER_FIRST;
     else if ( !strcmp(str, "performance") )
         core_parking_controller = PERFORMANCE_FIRST;
     else
-        return;
+        return -EINVAL;
+
+    return 0;
 }
 custom_param("core_parking", setup_core_parking_option);
 
-- 
2.12.3


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