[PATCH 5.11 034/306] ibmvnic: Fix possibly uninitialized old_num_tx_queues variable warning.

[gregkh]

From: Greg Kroah-Hartman <gre...@linuxfoundation.org>

From: Michal Suchanek <msucha...@suse.de>

commit 6881b07fdd24850def1f03761c66042b983ff86e upstream.

GCC 7.5 reports:
../drivers/net/ethernet/ibm/ibmvnic.c: In function 'ibmvnic_reset_init':
../drivers/net/ethernet/ibm/ibmvnic.c:5373:51: warning: 'old_num_tx_queues' may 
be used uninitialized in this function [-Wmaybe-uninitialized]
../drivers/net/ethernet/ibm/ibmvnic.c:5373:6: warning: 'old_num_rx_queues' may 
be used uninitialized in this function [-Wmaybe-uninitialized]

The variable is initialized only if(reset) and used only if(reset &&
something) so this is a false positive. However, there is no reason to
not initialize the variables unconditionally avoiding the warning.

Fixes: 635e442f4a48 ("ibmvnic: merge ibmvnic_reset_init and ibmvnic_init")
Signed-off-by: Michal Suchanek <msucha...@suse.de>
Reviewed-by: Sukadev Bhattiprolu <suka...@linux.ibm.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/ibm/ibmvnic.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -5283,16 +5283,14 @@ static int ibmvnic_reset_init(struct ibm
 {
        struct device *dev = &adapter->vdev->dev;
        unsigned long timeout = msecs_to_jiffies(20000);
-       u64 old_num_rx_queues, old_num_tx_queues;
+       u64 old_num_rx_queues = adapter->req_rx_queues;
+       u64 old_num_tx_queues = adapter->req_tx_queues;
        int rc;
 
        adapter->from_passive_init = false;
 
-       if (reset) {
-               old_num_rx_queues = adapter->req_rx_queues;
-               old_num_tx_queues = adapter->req_tx_queues;
+       if (reset)
                reinit_completion(&adapter->init_done);
-       }
 
        adapter->init_done_rc = 0;
        rc = ibmvnic_send_crq_init(adapter);