Reset a port's resources only if they're actually in an error state

Signed-off-by: Thomas Klein <tklein@de.ibm.com>
---

Patch created against net-2.6

diff -Nurp net-2.6.orig/drivers/net/ehea/ehea_main.c net-2.6/drivers/net/ehea/ehea_main.c
--- net-2.6.orig/drivers/net/ehea/ehea_main.c	2010-04-21 10:23:21.000000000 +0200
+++ net-2.6/drivers/net/ehea/ehea_main.c	2010-04-21 10:41:21.000000000 +0200
@@ -791,11 +791,17 @@ static struct ehea_cqe *ehea_proc_cqes(s
 		cqe_counter++;
 		rmb();
 		if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
-			ehea_error("Send Completion Error: Resetting port");
+			ehea_error("Bad send completion status=0x%04X",
+				   cqe->status);
+
 			if (netif_msg_tx_err(pr->port))
 				ehea_dump(cqe, sizeof(*cqe), "Send CQE");
-			ehea_schedule_port_reset(pr->port);
-			break;
+
+			if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
+				ehea_error("Resetting port");
+				ehea_schedule_port_reset(pr->port);
+				break;
+			}
 		}
 
 		if (netif_msg_tx_done(pr->port))
@@ -901,6 +907,8 @@ static irqreturn_t ehea_qp_aff_irq_handl
 	struct ehea_eqe *eqe;
 	struct ehea_qp *qp;
 	u32 qp_token;
+	u64 resource_type, aer, aerr;
+	int reset_port = 0;
 
 	eqe = ehea_poll_eq(port->qp_eq);
 
@@ -910,11 +918,24 @@ static irqreturn_t ehea_qp_aff_irq_handl
 			   eqe->entry, qp_token);
 
 		qp = port->port_res[qp_token].qp;
-		ehea_error_data(port->adapter, qp->fw_handle);
+
+		resource_type = ehea_error_data(port->adapter, qp->fw_handle,
+						&aer, &aerr);
+
+		if (resource_type == EHEA_AER_RESTYPE_QP) {
+			if ((aer & EHEA_AER_RESET_MASK) ||
+			    (aerr & EHEA_AERR_RESET_MASK))
+				 reset_port = 1;
+		} else
+			reset_port = 1;   /* Reset in case of CQ or EQ error */
+
 		eqe = ehea_poll_eq(port->qp_eq);
 	}
 
-	ehea_schedule_port_reset(port);
+	if (reset_port) {
+		ehea_error("Resetting port");
+		ehea_schedule_port_reset(port);
+	}
 
 	return IRQ_HANDLED;
 }
diff -Nurp net-2.6.orig/drivers/net/ehea/ehea_qmr.c ...
[ message continues ]

From: Thomas Klein <tklein@de.ibm.com>

I thought you were sorry for wasting my time and that you were going
to follow the directions I gave you last time, and I quote:

--------------------
3) These are not appropriate for net-2.6 as we are deep in
   the -rcX series at this point and only the most diabolical
   bug fixes are appropriate.  Therefore, please generate these
   against net-next-2.6, thanks.
--------------------

And here you are generating your patches against net-2.6.  Heck, you
even feel it's worth mentioning explicitly.

Lucky for you the patches happen to apply cleanly to net-next-2.6 so
I've put them there.
--

[ message continues ]

Thanks!
--

[ message continues ]