netdev - [net-next 08/15] ice: fix ice_is_tc

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Message-Id: <20190827163832.8362-9-jeffrey.t.kirsher@intel.com>
Date:   Tue, 27 Aug 2019 09:38:25 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Jacob Keller <jacob.e.keller@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 08/15] ice: fix ice_is_tc_ena

From: Jacob Keller <jacob.e.keller@...el.com>

ice_is_tc_ena is used to check whether a given traffic class is
enabled. Because there are only 8 traffic classes, the function took
a u8 bitmap. This causes problems because it is cast to an unsigned
long causing a static analysis warning regarding Out-of-bounds read.

Fix this by simply updating ice_is_tc_ena to take an unsigned long.
Passing a u8 to this function should implicitly convert the value.

Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_type.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index d76e0cb7ef46..b538d0b9eb80 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -13,9 +13,9 @@
 #define ICE_BYTES_PER_WORD	2
 #define ICE_BYTES_PER_DWORD	4
 
-static inline bool ice_is_tc_ena(u8 bitmap, u8 tc)
+static inline bool ice_is_tc_ena(unsigned long bitmap, u8 tc)
 {
-	return test_bit(tc, (unsigned long *)&bitmap);
+	return test_bit(tc, &bitmap);
 }
 
 /* Driver always calls main vsi_handle first */
-- 
2.21.0