From: Ferruh Yigit <ferruh.yigit@intel.com>
Date: Mon, 11 May 2020 16:07:25 +0000 (+0100)
Subject: event/octeontx2: fix build for O1 optimization
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=ea153cc853049c6f935693e48d2866782370a3fe;p=dpdk.git

event/octeontx2: fix build for O1 optimization

Can be reproduced with "make EXTRA_CFLAGS='-O1'" command using
gcc 7.3.0

Build error
In file included from .../drivers/event/octeontx2/ot
x2_evdev.c:15:0:
.../drivers/event/octeontx2/otx2_evdev_stats.h:
    In function ‘otx2_sso_xstats_get’:
.../drivers/event/octeontx2/otx2_evdev_stats.h:124:9:
    error: ‘xstats’ may be used uninitialized in this function
           [-Werror=maybe-uninitialized]
   xstat = &xstats[ids[i] - start_offset];
   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This is false positive, 'xstats_mode_count' should be preventing taking
the loop and accessing 'xstats'.
Returning in that case to silence the compiler warning.

Reported-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---

diff --git a/drivers/event/octeontx2/otx2_evdev_stats.h b/drivers/event/octeontx2/otx2_evdev_stats.h
index 9d7c694ee6..74fcec8a07 100644
--- a/drivers/event/octeontx2/otx2_evdev_stats.h
+++ b/drivers/event/octeontx2/otx2_evdev_stats.h
@@ -67,7 +67,7 @@ otx2_sso_xstats_get(const struct rte_eventdev *event_dev,
 
 	switch (mode) {
 	case RTE_EVENT_DEV_XSTATS_DEVICE:
-		break;
+		return 0;
 	case RTE_EVENT_DEV_XSTATS_PORT:
 		if (queue_port_id >= (signed int)dev->nb_event_ports)
 			goto invalid_value;