dmaengine: shdma: remove legacy slave_id parsing

The slave device is picked through either devicetree or a filter
function, and any remaining out-of-tree drivers would have warned
about this usage since 2015.

Stop interpreting the field finally so it can be removed from
the interface.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20211122222203.4103644-6-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
index 7f72b3f4cd1aefd083e1c8d8017d682820091cf0..41c6bc650fa3ee6f821bf7c5e9491fd6b76215d2 100644 (file)
--- a/drivers/dma/sh/shdma-base.c
+++ b/drivers/dma/sh/shdma-base.c
@@ -786,14 +786,6 @@ static int shdma_config(struct dma_chan *chan,
        if (!config)
                return -EINVAL;
 
-       /*
-        * overriding the slave_id through dma_slave_config is deprecated,
-        * but possibly some out-of-tree drivers still do it.
-        */
-       if (WARN_ON_ONCE(config->slave_id &&
-                        config->slave_id != schan->real_slave_id))
-               schan->real_slave_id = config->slave_id;
-
        /*
         * We could lock this, but you shouldn't be configuring the
         * channel, while using it...