bnx2x: do not deal with power if no capability

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index b037dd2db8e5..afff58c52d4f 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -1521,6 +1521,12 @@ int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
 {
         u16 pmcsr;
 
+        /* If there is no power capability, silently succeed */
+        if (!bp->pm_cap) {
+                DP(NETIF_MSG_HW, "No power capability. Breaking.\n");
+                return 0;
+        }
+
         pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr);
 
         switch (state) {