1 files changed, 46 insertions, 7 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb/sge.c b/drivers/net/ethernet/chelsio/cxgb/sge.c
index 2d9c2b5a690a..cda01f22c71c 100644
--- a/drivers/net/ethernet/chelsio/cxgb/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb/sge.c
@@ -940,10 +940,11 @@ void t1_sge_intr_clear(struct sge *sge)
 /*
  * SGE 'Error' interrupt handler
  */
-int t1_sge_intr_error_handler(struct sge *sge)
+bool t1_sge_intr_error_handler(struct sge *sge)
 {
 	struct adapter *adapter = sge->adapter;
 	u32 cause = readl(adapter->regs + A_SG_INT_CAUSE);
+	bool wake = false;
 
 	if (adapter->port[0].dev->hw_features & NETIF_F_TSO)
 		cause &= ~F_PACKET_TOO_BIG;
@@ -967,11 +968,14 @@ int t1_sge_intr_error_handler(struct sge *sge)
 		sge->stats.pkt_mismatch++;
 		pr_alert("%s: SGE packet mismatch\n", adapter->name);
 	}
-	if (cause & SGE_INT_FATAL)
-		t1_fatal_err(adapter);
+	if (cause & SGE_INT_FATAL) {
+		t1_interrupts_disable(adapter);
+		adapter->pending_thread_intr |= F_PL_INTR_SGE_ERR;
+		wake = true;
+	}
 
 	writel(cause, adapter->regs + A_SG_INT_CAUSE);
-	return 0;
+	return wake;
 }
 
 const struct sge_intr_counts *t1_sge_get_intr_counts(const struct sge *sge)
@@ -1619,11 +1623,46 @@ int t1_poll(struct napi_struct *napi, int budget)
 	return work_done;
 }
 
+irqreturn_t t1_interrupt_thread(int irq, void *data)
+{
+	struct adapter *adapter = data;
+	u32 pending_thread_intr;
+
+	spin_lock_irq(&adapter->async_lock);
+	pending_thread_intr = adapter->pending_thread_intr;
+	adapter->pending_thread_intr = 0;
+	spin_unlock_irq(&adapter->async_lock);
+
+	if (!pending_thread_intr)
+		return IRQ_NONE;
+
+	if (pending_thread_intr & F_PL_INTR_EXT)
+		t1_elmer0_ext_intr_handler(adapter);
+
+	/* This error is fatal, interrupts remain off */
+	if (pending_thread_intr & F_PL_INTR_SGE_ERR) {
+		pr_alert("%s: encountered fatal error, operation suspended\n",
+			 adapter->name);
+		t1_sge_stop(adapter->sge);
+		return IRQ_HANDLED;
+	}
+
+	spin_lock_irq(&adapter->async_lock);
+	adapter->slow_intr_mask |= F_PL_INTR_EXT;
+
+	writel(F_PL_INTR_EXT, adapter->regs + A_PL_CAUSE);
+	writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
+	       adapter->regs + A_PL_ENABLE);
+	spin_unlock_irq(&adapter->async_lock);
+
+	return IRQ_HANDLED;
+}
+
 irqreturn_t t1_interrupt(int irq, void *data)
 {
 	struct adapter *adapter = data;
 	struct sge *sge = adapter->sge;
-	int handled;
+	irqreturn_t handled;
 
 	if (likely(responses_pending(adapter))) {
 		writel(F_PL_INTR_SGE_DATA, adapter->regs + A_PL_CAUSE);
@@ -1645,10 +1684,10 @@ irqreturn_t t1_interrupt(int irq, void *data)
 	handled = t1_slow_intr_handler(adapter);
 	spin_unlock(&adapter->async_lock);
 
-	if (!handled)
+	if (handled == IRQ_NONE)
 		sge->stats.unhandled_irqs++;
 
-	return IRQ_RETVAL(handled != 0);
+	return handled;
 }
 
 /*