dma-mapping: remove dma_configure

There is no good reason for this indirection given that the method always exists. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Robin Murphy <[email protected]>
ambv · Sep 8, 2018 · ccf640f · ccf640f
1 parent 58643a3
commit ccf640f
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Showing 3 changed files with 5 additions and 19 deletions.
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
@@ -480,9 +480,11 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 	if (ret)
 		goto pinctrl_bind_failed;
 
-	ret = dma_configure(dev);
-	if (ret)
-		goto dma_failed;
+	if (dev->bus->dma_configure) {
+		ret = dev->bus->dma_configure(dev);
+		if (ret)
+			goto dma_failed;
+	}
 
 	if (driver_sysfs_add(dev)) {
 		printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
@@ -754,14 +754,8 @@ dma_mark_declared_memory_occupied(struct device *dev,
 #endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */
 
 #ifdef CONFIG_HAS_DMA
-int dma_configure(struct device *dev);
 void dma_deconfigure(struct device *dev);
 #else
-static inline int dma_configure(struct device *dev)
-{
-	return 0;
-}
-
 static inline void dma_deconfigure(struct device *dev) {}
 #endif
 

diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
@@ -328,16 +328,6 @@ void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags)
 }
 #endif
 
-/*
- * enables DMA API use for a device
- */
-int dma_configure(struct device *dev)
-{
-	if (dev->bus->dma_configure)
-		return dev->bus->dma_configure(dev);
-	return 0;
-}
-
 void dma_deconfigure(struct device *dev)
 {
 	of_dma_deconfigure(dev);