[Xen-devel] [PATCH 9/9] acpi/pmstat: fix check for empty name strings.

[Tim Deegan <tim@xxxxxxx>]

These 'name' strings are actually arrays in their structs.  So the
address is never NULL: instead, we should check the first character to
detect cases where the field wasn't initialized.

Coverity CID 1055633

Signed-off-by: Tim Deegan <tim@xxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/acpi/pmstat.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/acpi/pmstat.c b/xen/drivers/acpi/pmstat.c
index f8a9c85..daac2da 100644
--- a/xen/drivers/acpi/pmstat.c
+++ b/xen/drivers/acpi/pmstat.c
@@ -264,13 +264,13 @@ static int get_cpufreq_para(struct xen_sysctl_pm_op *op)
     op->u.get_para.scaling_max_freq = policy->max;
     op->u.get_para.scaling_min_freq = policy->min;
 
-    if ( cpufreq_driver->name )
+    if ( cpufreq_driver->name[0] )
         strlcpy(op->u.get_para.scaling_driver, 
             cpufreq_driver->name, CPUFREQ_NAME_LEN);
     else
         strlcpy(op->u.get_para.scaling_driver, "Unknown", CPUFREQ_NAME_LEN);
 
-    if ( policy->governor->name )
+    if ( policy->governor->name[0] )
         strlcpy(op->u.get_para.scaling_governor, 
             policy->governor->name, CPUFREQ_NAME_LEN);
     else
-- 
1.7.10.4


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