There is a few things done:
- include only the headers we are direct user of
- when pointer is in use, provide a forward declaration
- add missing headers
- sort alphabetically

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/dma/acpi-dma.c   | 13 ++++++++-----
 include/linux/acpi_dma.h |  5 +++--
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c
index f594ea265c76..2abbe11e797e 100644
--- a/drivers/dma/acpi-dma.c
+++ b/drivers/dma/acpi-dma.c
@@ -9,18 +9,21 @@
  *	    Mika Westerberg <mika.westerberg@linux.intel.com>
  */
 
+#include <linux/acpi.h>
+#include <linux/acpi_dma.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/acpi.h>
-#include <linux/acpi_dma.h>
 #include <linux/property.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
 
 static LIST_HEAD(acpi_dma_list);
 static DEFINE_MUTEX(acpi_dma_lock);
diff --git a/include/linux/acpi_dma.h b/include/linux/acpi_dma.h
index 3ef1ec7a04cb..e748b2877602 100644
--- a/include/linux/acpi_dma.h
+++ b/include/linux/acpi_dma.h
@@ -11,10 +11,11 @@
 #ifndef __LINUX_ACPI_DMA_H
 #define __LINUX_ACPI_DMA_H
 
-#include <linux/list.h>
-#include <linux/device.h>
 #include <linux/err.h>
 #include <linux/dmaengine.h>
+#include <linux/types.h>
+
+struct device;
 
 /**
  * struct acpi_dma_spec - slave device DMA resources
-- 
2.43.0.rc1.1336.g36b5255a03ac