netdev - [PATCH net 3/6] i40e: Fix sparse error: uninitialized symbol 'ring'

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Message-Id: <20210408173537.3519606-4-anthony.l.nguyen@intel.com>
Date:   Thu,  8 Apr 2021 10:35:34 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>,
        netdev@...r.kernel.org, sassmann@...hat.com,
        anthony.l.nguyen@...el.com,
        Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
        Dave Switzer <david.switzer@...el.com>
Subject: [PATCH net 3/6] i40e: Fix sparse error: uninitialized symbol 'ring'

From: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>

Init pointer with NULL in default switch case statement.

Previously the error was produced when compiling against sparse.
i40e_debugfs.c:582 i40e_dbg_dump_desc() error: uninitialized symbol 'ring'.

Fixes: 44ea803e2fa7 ("i40e: introduce new dump desc XDP command")
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
Tested-by: Dave Switzer <david.switzer@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_debugfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
index d7c13ca9be7d..d627b59ad446 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
@@ -578,6 +578,9 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
 	case RING_TYPE_XDP:
 		ring = kmemdup(vsi->xdp_rings[ring_id], sizeof(*ring), GFP_KERNEL);
 		break;
+	default:
+		ring = NULL;
+		break;
 	}
 	if (!ring)
 		return;
-- 
2.26.2