qlcnic: fix initial number of msix entries in adapter.

Calculation of number of MSI-X vectors was wrong on uniprocessor
systems.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index e5bb332..58d7616 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -900,7 +900,6 @@
 	((adapter)->flags & (QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED))
 
 #define QLCNIC_DEF_NUM_STS_DESC_RINGS	4
-#define QLCNIC_MIN_NUM_RSS_RINGS	2
 #define QLCNIC_MSIX_TBL_SPACE		8192
 #define QLCNIC_PCI_REG_MSIX_TBL 	0x44
 #define QLCNIC_MSIX_TBL_PGSIZE		4096
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index a656a12..a050746 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -418,10 +418,8 @@
 	int num_msix;
 
 	if (adapter->msix_supported) {
-		num_msix = (num_online_cpus() >=
-			QLCNIC_DEF_NUM_STS_DESC_RINGS) ?
-			QLCNIC_DEF_NUM_STS_DESC_RINGS :
-			QLCNIC_MIN_NUM_RSS_RINGS;
+		num_msix = rounddown_pow_of_two(min_t(int, num_online_cpus(),
+				QLCNIC_DEF_NUM_STS_DESC_RINGS));
 	} else
 		num_msix = 1;