From: David Ertman <david.m.ertman@intel.com>
Date: Fri, 30 Sep 2016 08:36:21 +0000 (-0700)
Subject: i40e: Fix bit logic error in failure case
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c17ef430b9fd5f58074f5cdc0128d06a5ae92304;p=linux-beck.git

i40e: Fix bit logic error in failure case

Patch a036244c0686 "i40e: Fix kernel panic on enable/disable LLDP"
introduced an error in bit logic.

Originally this bit manipulation was meant to clear two bits to indicate
that DCB was not enabled or capable. An "&" was incorrectly used instead
of an "|" bit operator to combine the two bitmasks into one.  This also
created a static checker error since the resultant code was a no-op.

This patch fixes the error by using the correct bit-wise operator.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 00c322d3cbab..0c2328dab8f7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -10970,7 +10970,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	err = i40e_init_pf_dcb(pf);
 	if (err) {
 		dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
-		pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED);
+		pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
 		/* Continue without DCB enabled */
 	}
 #endif /* CONFIG_I40E_DCB */