dmaengine: Unify checks in dma_request_chan()

Use dev_fwnode() to simplify the check logic for Device Tree and ACPI
in dma_request_chan().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250205145757.889247-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index dd4224d90f07085dbada7869fb4a438d41d9ef97..758fcd0546d8bde8e8dddc6039848feeb1e24475 100644 (file)
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -40,6 +40,8 @@
 #include <linux/dmaengine.h>
 #include <linux/hardirq.h>
 #include <linux/spinlock.h>
+#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/percpu.h>
 #include <linux/rcupdate.h>
 #include <linux/mutex.h>
@@ -812,15 +814,13 @@ static const struct dma_slave_map *dma_filter_match(struct dma_device *device,
  */
 struct dma_chan *dma_request_chan(struct device *dev, const char *name)
 {
+       struct fwnode_handle *fwnode = dev_fwnode(dev);
        struct dma_device *d, *_d;
        struct dma_chan *chan = NULL;
 
-       /* If device-tree is present get slave info from here */
-       if (dev->of_node)
-               chan = of_dma_request_slave_channel(dev->of_node, name);
-
-       /* If device was enumerated by ACPI get slave info from here */
-       if (has_acpi_companion(dev) && !chan)
+       if (is_of_node(fwnode))
+               chan = of_dma_request_slave_channel(to_of_node(fwnode), name);
+       else if (is_acpi_device_node(fwnode))
                chan = acpi_dma_request_slave_chan_by_name(dev, name);
 
        if (PTR_ERR(chan) == -EPROBE_DEFER)