net: mscc: simplify retrieving the tag type from the frame header

The tag type in the frame extraction header is only a bit wide. There's
no need to use GENMASK when retrieving the information. This patch
simplify the code by dropping GENMASK and using BIT instead.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2018-07-13 16:57:57 +02:00 committed by David S. Miller
parent bc1b50309c
commit 495083807f

View file

@ -29,7 +29,7 @@ static int ocelot_parse_ifh(u32 *ifh, struct frame_info *info)
info->port = (ifh[2] & GENMASK(14, 11)) >> 11;
info->cpuq = (ifh[3] & GENMASK(27, 20)) >> 20;
info->tag_type = (ifh[3] & GENMASK(16, 16)) >> 16;
info->tag_type = (ifh[3] & BIT(16)) >> 16;
info->vid = ifh[3] & GENMASK(11, 0);
return 0;