releases/4.16.17/ixgbe-return-error-on-unsupported-sfp-module-when-resetting.patch

From foo@baz Sun Jun 17 12:07:34 CEST 2018
From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Thu, 19 Apr 2018 17:06:57 -0700
Subject: ixgbe: return error on unsupported SFP module when resetting

From: Emil Tantilov <emil.s.tantilov@intel.com>

[ Upstream commit bbb2707623f3ccc48695da2433f06d7c38193451 ]

Add check for unsupported module and return the error code.
This fixes a Coverity hit due to unused return status from setup_sfp.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -3427,6 +3427,9 @@ static s32 ixgbe_reset_hw_X550em(struct
 		hw->phy.sfp_setup_needed = false;
 	}
 
+	if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
+		return status;
+
 	/* Reset PHY */
 	if (!hw->phy.reset_disable && hw->phy.ops.reset)
 		hw->phy.ops.reset(hw);