--- zzzz-none-000/linux-5.4.213/drivers/bcma/main.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/drivers/bcma/main.c	2024-08-14 09:01:35.000000000 +0000
@@ -236,13 +236,17 @@
 
 void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
 {
+	struct device *dev = &core->dev;
+
 	device_initialize(&core->dev);
 	core->dev.release = bcma_release_core_dev;
 	core->dev.bus = &bcma_bus_type;
 	dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
 	core->dev.parent = bus->dev;
-	if (bus->dev)
+	if (bus->dev) {
 		bcma_of_fill_device(bus->dev, core);
+		dma_coerce_mask_and_coherent(dev, bus->dev->coherent_dma_mask);
+	}
 
 	switch (bus->hosttype) {
 	case BCMA_HOSTTYPE_PCI: