iavf: field get conversion

Refactor the iavf driver to use FIELD_GET() for mask and shift reads,
which reduces lines of code and adds clarity of intent.

This code was generated by the following coccinelle/spatch script and
then manually repaired in a later patch.

@get@
constant shift,mask;
type T;
expression a;
@@
-((T)((a) & mask) >> shift)
+FIELD_GET(mask, a)

and applied via:
spatch --sp-file field_prep.cocci --in-place --dir \
 drivers/net/ethernet/intel/

Cc: Julia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
index bffb45802dab..378c3e9ddf9d 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
@@ -1017,8 +1017,7 @@ iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
 #define IAVF_USERDEF_FLEX_MAX_OFFS_VAL 504
 		flex = &fltr->flex_words[cnt++];
 		flex->word = value & IAVF_USERDEF_FLEX_WORD_M;
-		flex->offset = (value & IAVF_USERDEF_FLEX_OFFS_M) >>
-			     IAVF_USERDEF_FLEX_OFFS_S;
+		flex->offset = FIELD_GET(IAVF_USERDEF_FLEX_OFFS_M, value);
 		if (flex->offset > IAVF_USERDEF_FLEX_MAX_OFFS_VAL)
 			return -EINVAL;
 	}