dmaengine: pch_dma: remove unused function chan2parent

The helper function chan2parent is not used and has never been
used since the first commit to the code back in 2010. The function
is redundant and can be removed.

Cleans up clang scan build warning:
drivers/dma/pch_dma.c:158:30: warning: unused function 'chan2parent' [-Wunused-function]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20240308134750.2058556-1-colin.i.king@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index c359decc07a3f86bdef7b0836458eff86c70dfba..6b2793b07694964dd1c1a9097406ce088d7d1508 100644 (file)
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -155,11 +155,6 @@ static inline struct device *chan2dev(struct dma_chan *chan)
        return &chan->dev->device;
 }
 
-static inline struct device *chan2parent(struct dma_chan *chan)
-{
-       return chan->dev->device.parent;
-}
-
 static inline
 struct pch_dma_desc *pdc_first_active(struct pch_dma_chan *pd_chan)
 {