[dpdk-stable] [PATCH] eal: fix parsing zero socket memory and limits

[Ilya Maximets <i.maximets@samsung.com>]

Modern memory mode allowes to not reserve any memory by the
'--socket-mem' option. i.e. it could be possible to specify
zero preallocated memory like '--socket-mem 0'.
Also, it should be possible to configure unlimited memory
allocations by '--socket-limit 0'.

Both cases are impossible now and blocks starting the DPDK
application:

    ./dpdk-app --socket-limit 0 <...>
    EAL: invalid parameters for --socket-limit
    EAL: Invalid 'command line' arguments.
    Unable to initialize DPDK: Invalid argument

Fixes: 6b42f75632f0 ("eal: enable non-legacy memory mode")
Cc: stable@dpdk.org

Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
---
 lib/librte_eal/linuxapp/eal/eal.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index a386829f3..13f401684 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -582,10 +582,6 @@ eal_parse_socket_arg(char *strval, volatile uint64_t *socket_arg)
 		socket_arg[i] = val;
 	}
 
-	/* check if we have a positive amount of total memory */
-	if (total_mem == 0)
-		return -1;
-
 	return 0;
 }
 
-- 
2.17.1