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From:   Ivan Vecera <ivecera@redhat.com>
To:     netdev@vger.kernel.org
Cc:     Sathya Perla <sathya.perla@broadcom.com>,
        Ajit Khaparde <ajit.khaparde@broadcom.com>,
        Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>,
        Somnath Kotur <somnath.kotur@broadcom.com>,
        "David S. Miller" <davem@davemloft.net>,
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] Revert "be2net: remove desc field from be_eq_obj"
Date:   Tue, 23 Oct 2018 16:40:26 +0200
Message-Id: <20181023144026.26180-1-ivecera@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

The mentioned commit needs to be reverted because we cannot pass
string allocated on stack to request_irq(). This function stores
uses this pointer for later use (e.g. /proc/interrupts) so we need
to keep this string persistently.

Fixes: d6d9704af8f4 ("be2net: remove desc field from be_eq_obj")

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
 drivers/net/ethernet/emulex/benet/be.h      | 1 +
 drivers/net/ethernet/emulex/benet/be_main.c | 6 ++----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index 58bcee8f0a58..ce041c90adb0 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -185,6 +185,7 @@ static inline void queue_tail_inc(struct be_queue_info *q)
 
 struct be_eq_obj {
 	struct be_queue_info q;
+	char desc[32];
 
 	struct be_adapter *adapter;
 	struct napi_struct napi;
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 534787291b44..bff74752cef1 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3488,11 +3488,9 @@ static int be_msix_register(struct be_adapter *adapter)
 	int status, i, vec;
 
 	for_all_evt_queues(adapter, eqo, i) {
-		char irq_name[IFNAMSIZ+4];
-
-		snprintf(irq_name, sizeof(irq_name), "%s-q%d", netdev->name, i);
+		sprintf(eqo->desc, "%s-q%d", netdev->name, i);
 		vec = be_msix_vec_get(adapter, eqo);
-		status = request_irq(vec, be_msix, 0, irq_name, eqo);
+		status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
 		if (status)
 			goto err_msix;
 
-- 
2.18.1