[dpdk-dev] [PATCH 1/2] power: fix power management env detection

[Anatoly Burakov]

Anything coming from sysfs has a newline at the end. Cut it off before
comparing the strings.

Fixes: 20ab67608a39 ("power: add environment capability probing")

Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
 lib/librte_power/power_common.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/librte_power/power_common.c b/lib/librte_power/power_common.c
index 59023d986b..fd527719cd 100644
--- a/lib/librte_power/power_common.c
+++ b/lib/librte_power/power_common.c
@@ -15,6 +15,7 @@ int
 cpufreq_check_scaling_driver(const char *driver_name)
 {
        unsigned int lcore_id = 0; /* always check core 0 */
+       size_t len;
        char fullpath[PATH_MAX];
        char readbuf[PATH_MAX];
        char *s;
@@ -39,6 +40,10 @@ cpufreq_check_scaling_driver(const char *driver_name)
        if (s == NULL)
                return 0;
 
+       /* when read from sysfs, driver name has an extra newline at the end */
+       len = strnlen(readbuf, sizeof(readbuf));
+       readbuf[len - 1] = '\0';
+
        /* does the driver name match? */
        if (strncmp(readbuf, driver_name, sizeof(readbuf)) != 0)
                return 0;
-- 
2.17.1