soundwire: slave: use SDW_DISCO_LINK_ID()

use SDW_DISCO_LINK_ID() in slave code to extract field values instead of
open coding masks and shift operations to extract link_id

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200903114504.1202143-4-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
index a762ee24e6faee5c74df0c3caccfb76d7b0bcf71..2191dd6e7aa497a5c34b2e84f43e2e530b3017d3 100644 (file)
--- a/drivers/soundwire/slave.c
+++ b/drivers/soundwire/slave.c
@@ -106,7 +106,7 @@ static bool find_slave(struct sdw_bus *bus,
        }
 
        /* Extract link id from ADR, Bit 51 to 48 (included) */
-       link_id = (addr >> 48) & GENMASK(3, 0);
+       link_id = SDW_DISCO_LINK_ID(addr);
 
        /* Check for link_id match */
        if (link_id != bus->link_id)