[dpdk-dev] [PATCH v1] examples/vm_power_manager: fix overflowed return value

[David Hunt]

Coverity complains about the return of a value that may
possibly overflow because of a multiply. Limit the value
so it cannot overflow.

Coverity issue: 337677
Fixes: 4b1a631b8a ("examples/vm_power: add oob monitoring functions")
CC: sta...@dpdk.org
Signed-off-by: David Hunt <david.h...@intel.com>
---
 examples/vm_power_manager/oob_monitor_x86.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/vm_power_manager/oob_monitor_x86.c 
b/examples/vm_power_manager/oob_monitor_x86.c
index ebd96b205..2074eec1e 100644
--- a/examples/vm_power_manager/oob_monitor_x86.c
+++ b/examples/vm_power_manager/oob_monitor_x86.c
@@ -99,7 +99,10 @@ apply_policy(int core)
                return -1.0;
        }
 
-       ratio = (float)miss_diff * (float)100 / (float)hits_diff;
+       ratio = (float)miss_diff / (float)hits_diff;
+       if (ratio > 1.0)
+               ratio = 1.0;
+       ratio *= 100.0f;
 
        if (ratio < ci->branch_ratio_threshold)
                power_manager_scale_core_min(core);
-- 
2.17.1