--- zzzz-none-000/linux-3.10.107/drivers/usb/musb/tusb6010_omap.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/usb/musb/tusb6010_omap.c	2021-02-04 17:41:59.000000000 +0000
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
-#include <linux/init.h>
 #include <linux/usb.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
@@ -66,28 +65,6 @@
 	unsigned			multichannel:1;
 };
 
-static int tusb_omap_dma_start(struct dma_controller *c)
-{
-	struct tusb_omap_dma	*tusb_dma;
-
-	tusb_dma = container_of(c, struct tusb_omap_dma, controller);
-
-	/* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */
-
-	return 0;
-}
-
-static int tusb_omap_dma_stop(struct dma_controller *c)
-{
-	struct tusb_omap_dma	*tusb_dma;
-
-	tusb_dma = container_of(c, struct tusb_omap_dma, controller);
-
-	/* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */
-
-	return 0;
-}
-
 /*
  * Allocate dmareq0 to the current channel unless it's already taken
  */
@@ -648,7 +625,7 @@
 	channel = NULL;
 }
 
-void dma_controller_destroy(struct dma_controller *c)
+void tusb_dma_controller_destroy(struct dma_controller *c)
 {
 	struct tusb_omap_dma	*tusb_dma;
 	int			i;
@@ -667,8 +644,10 @@
 
 	kfree(tusb_dma);
 }
+EXPORT_SYMBOL_GPL(tusb_dma_controller_destroy);
 
-struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *base)
+struct dma_controller *
+tusb_dma_controller_create(struct musb *musb, void __iomem *base)
 {
 	void __iomem		*tbase = musb->ctrl_base;
 	struct tusb_omap_dma	*tusb_dma;
@@ -695,14 +674,12 @@
 	tusb_dma->dmareq = -1;
 	tusb_dma->sync_dev = -1;
 
-	tusb_dma->controller.start = tusb_omap_dma_start;
-	tusb_dma->controller.stop = tusb_omap_dma_stop;
 	tusb_dma->controller.channel_alloc = tusb_omap_dma_allocate;
 	tusb_dma->controller.channel_release = tusb_omap_dma_release;
 	tusb_dma->controller.channel_program = tusb_omap_dma_program;
 	tusb_dma->controller.channel_abort = tusb_omap_dma_abort;
 
-	if (tusb_get_revision(musb) >= TUSB_REV_30)
+	if (musb->tusb_revision >= TUSB_REV_30)
 		tusb_dma->multichannel = 1;
 
 	for (i = 0; i < MAX_DMAREQ; i++) {
@@ -726,7 +703,8 @@
 	return &tusb_dma->controller;
 
 cleanup:
-	dma_controller_destroy(&tusb_dma->controller);
+	musb_dma_controller_destroy(&tusb_dma->controller);
 out:
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(tusb_dma_controller_create);