[PATCH] dmaengine: dw-axi-dmac: demote apb_regs warning to debug

dw_axi_dma_set_hw_channel() logs "apb_regs not initialized" at err
level when apb_regs is absent. However, only Intel KeemBay
("intel,kmb-axi-dma") carries apb_regs; all other supported SoCs
(snps,axi-dma-1.01a, sophgo,cv1800b, starfive,jh7110/jh8100) operate
without it. For those, reaching this path during slave/cyclic prep and
terminate is the normal no-op case, not an error, and the err log spams
dmesg on every transfer.

Demote it to dev_dbg to match the identical check in
dw_axi_dma_set_byte_halfword().

Signed-off-by: Baineng Shou <redacted>
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index bcefaff03b5c..d829b9af5491 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c

@@ -574,7 +574,7 @@ static void dw_axi_dma_set_hw_channel(struct axi_dma_chan *chan, bool set)
 	unsigned long reg_value, val;
 
 	if (!chip->apb_regs) {
-		dev_err(chip->dev, "apb_regs not initialized\n");
+		dev_dbg(chip->dev, "apb_regs not initialized\n");
 		return;
 	}
 

-- 
2.34.1