dmaengine: pch_dma: remove unused function chan2parent

ColinIanKing · vinodkoul · commit 4665be0e952f · 2024-04-07T18:36:58.000+05:30
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
@@ -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)
 {

Original file line number	Diff line number	Diff line change
`@@ -155,11 +155,6 @@ static inline struct device chan2dev(struct dma_chan chan)`
`155`	`155`	`return &chan->dev->device;`
`156`	`156`	`}`
`157`	`157`
`158`		`-static inline struct device chan2parent(struct dma_chan chan)`
`159`		`-{`
`160`		`- return chan->dev->device.parent;`
`161`		`-}`
`162`		`-`
`163`	`158`	`static inline`
`164`	`159`	`struct pch_dma_desc pdc_first_active(struct pch_dma_chan pd_chan)`
`165`	`160`	`{`