From: David Hunt <david.hunt@intel.com>
Date: Mon, 7 Jan 2019 14:40:23 +0000 (+0000)
Subject: power: fix frequency list return code
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=ad514edf71fbd54c3ef0a8a1b3e112a8f52f53c9;p=dpdk.git

power: fix frequency list return code

The power_pstate_cpufreq_freqs() function was returning -1 in an
unsigned int, causing buffer over-runs when the results were being
processed. This function should be returning zero for all error
conditions, similar to it's acpi relation, power_acpi_cpufreq_freqs().

Fixes: e6c6dc0f96c8 ("power: add p-state driver compatibility")

Signed-off-by: David Hunt <david.hunt@intel.com>
---

diff --git a/lib/librte_power/power_pstate_cpufreq.c b/lib/librte_power/power_pstate_cpufreq.c
index 9111e6a577..c4d972fc03 100644
--- a/lib/librte_power/power_pstate_cpufreq.c
+++ b/lib/librte_power/power_pstate_cpufreq.c
@@ -581,7 +581,7 @@ power_pstate_cpufreq_freqs(unsigned int lcore_id, uint32_t *freqs, uint32_t num)
 
 	if (lcore_id >= RTE_MAX_LCORE) {
 		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
+		return 0;
 	}
 
 	if (freqs == NULL) {