[PATCH v2 2/2] tty: serial: 8250: replace chan->device->dev with dmaengine_get_provider_device()

[Frank.Li@oss.nxp.com]

From: Frank Li <Frank.Li@nxp.com>

Use the dmaengine_get_provider_device() API instead of directly
accessing chan->device->dev to get the DMA provider device.

No functional change. Prepare make to struct dma_device private to the DMA
engine.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
change in v2
- split pch_uart.c to new patch and keep only 8250*
- andy's add new API suggest, defer to next release.
---
 drivers/tty/serial/8250/8250_dw.c   | 2 +-
 drivers/tty/serial/8250/8250_lpss.c | 2 +-
 drivers/tty/serial/8250/8250_mid.c  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index eca02e8bd6d13..9adaf5b5fbd56 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -530,7 +530,7 @@ static bool dw8250_fallback_dma_filter(struct dma_chan *chan, void *param)
 
 static bool dw8250_idma_filter(struct dma_chan *chan, void *param)
 {
-	return param == chan->device->dev;
+	return param == dmaengine_get_provider_device(chan);
 }
 
 static void dw8250_setup_dma_filter(struct uart_port *p, struct dw8250_data *data)
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index 7e88f2b793b5a..eed37e8b3e831 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -269,7 +269,7 @@ static bool lpss8250_dma_filter(struct dma_chan *chan, void *param)
 {
 	struct dw_dma_slave *dws = param;
 
-	if (dws->dma_dev != chan->device->dev)
+	if (dws->dma_dev != dmaengine_get_provider_device(chan))
 		return false;
 
 	chan->private = dws;
diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c
index 44b43163df511..dfd2460983fab 100644
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -252,7 +252,7 @@ static bool mid8250_dma_filter(struct dma_chan *chan, void *param)
 {
 	struct hsu_dma_slave *s = param;
 
-	if (s->dma_dev != chan->device->dev || s->chan_id != chan->chan_id)
+	if (s->dma_dev != dmaengine_get_provider_device(chan) || s->chan_id != chan->chan_id)
 		return false;
 
 	chan->private = s;
-- 
2.43.0