[Xen-devel] [PATCH v4 25/53] xen/common/domain.c: let custom parameter parsing routines return errno

[Juergen Gross <jgross@xxxxxxxx>]

Modify the custom parameter parsing routines in:

xen/common/domain.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>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
V3:
- cosmetic changes (Jan Beulich)
---
 xen/common/domain.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/common/domain.c b/xen/common/domain.c
index b22aacc57e..acd420a1a5 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -245,12 +245,15 @@ static int late_hwdom_init(struct domain *d)
 
 static unsigned int __read_mostly extra_hwdom_irqs;
 static unsigned int __read_mostly extra_domU_irqs = 32;
-static void __init parse_extra_guest_irqs(const char *s)
+
+static int __init parse_extra_guest_irqs(const char *s)
 {
     if ( isdigit(*s) )
         extra_domU_irqs = simple_strtoul(s, &s, 0);
     if ( *s == ',' && isdigit(*++s) )
         extra_hwdom_irqs = simple_strtoul(s, &s, 0);
+
+    return *s ? -EINVAL : 0;
 }
 custom_param("extra_guest_irqs", parse_extra_guest_irqs);
 
-- 
2.12.3


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