bnx2x: Protecting the link change indication

Without this lock, in some race conditions the driver missed link
change indication

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 4f1ee1f2968c..701bcc1260c2 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -2234,9 +2234,7 @@ static void bnx2x_link_attn(struct bnx2x *bp)
         /* Make sure that we are synced with the current statistics */
         bnx2x_stats_handle(bp, STATS_EVENT_STOP);
 
-        bnx2x_acquire_phy_lock(bp);
         bnx2x_link_update(&bp->link_params, &bp->link_vars);
-        bnx2x_release_phy_lock(bp);
 
         if (bp->link_vars.link_up) {
 
@@ -2485,6 +2483,8 @@ static void bnx2x_attn_int_asserted(struct bnx2x *bp, u32 asserted)
         if (asserted & ATTN_HARD_WIRED_MASK) {
                 if (asserted & ATTN_NIG_FOR_FUNC) {
 
+                        bnx2x_acquire_phy_lock(bp);
+
                         /* save nig interrupt mask */
                         bp->nig_mask = REG_RD(bp, nig_int_mask_addr);
                         REG_WR(bp, nig_int_mask_addr, 0);
@@ -2540,8 +2540,10 @@ static void bnx2x_attn_int_asserted(struct bnx2x *bp, u32 asserted)
         REG_WR(bp, hc_addr, asserted);
 
         /* now set back the mask */
-        if (asserted & ATTN_NIG_FOR_FUNC)
+        if (asserted & ATTN_NIG_FOR_FUNC) {
                 REG_WR(bp, nig_int_mask_addr, bp->nig_mask);
+                bnx2x_release_phy_lock(bp);
+        }
 }
 
 static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)