[Xen-devel] [PATCH 29/52] xen/drivers/acpi/tables.c: let custom parameter parsing routines return errno

[Juergen Gross <jgross@xxxxxxxx>]

Modify the custom parameter parsing routines in:

xen/drivers/acpi/tables.c

to indicate whether the parameter value was parsed successfully.

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/drivers/acpi/tables.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/acpi/tables.c b/xen/drivers/acpi/tables.c
index dd2031f36a..ea600248aa 100644
--- a/xen/drivers/acpi/tables.c
+++ b/xen/drivers/acpi/tables.c
@@ -458,12 +458,13 @@ int __init acpi_table_init(void)
 
 static int __init acpi_parse_apic_instance(char *str)
 {
+       const char *q;
 
-       acpi_apic_instance = simple_strtoul(str, NULL, 0);
+       acpi_apic_instance = simple_strtoul(str, &q, 0);
 
        printk(KERN_NOTICE PREFIX "Shall use APIC/MADT table %d\n",
               acpi_apic_instance);
 
-       return 0;
+       return *q ? -EINVAL : 0;
 }
 custom_param("acpi_apic_instance", acpi_parse_apic_instance);
-- 
2.12.3


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