Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable

1 files changed, 21 insertions, 2 deletions

diff --git a/arch/arm/plat-mxc/devices.c b/arch/arm/plat-mxc/devices.c
index 735776d84956..e9bcefe79a43 100644
--- a/arch/arm/plat-mxc/devices.c
+++ b/arch/arm/plat-mxc/devices.c
@@ -17,6 +17,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
@@ -36,9 +37,10 @@ int __init mxc_register_device(struct platform_device *pdev, void *data)
         return ret;
 }
 
-struct platform_device *__init imx_add_platform_device(const char *name, int id,
+struct platform_device *__init imx_add_platform_device_dmamask(
+                const char *name, int id,
                 const struct resource *res, unsigned int num_resources,
-                const void *data, size_t size_data)
+                const void *data, size_t size_data, u64 dmamask)
 {
         int ret = -ENOMEM;
         struct platform_device *pdev;
@@ -47,6 +49,23 @@ struct platform_device *__init imx_add_platform_device(const char *name, int id,
         if (!pdev)
                 goto err;
 
+        if (dmamask) {
+                /*
+                 * This memory isn't freed when the device is put,
+                 * I don't have a nice idea for that though.  Conceptually
+                 * dma_mask in struct device should not be a pointer.
+                 * See http://thread.gmane.org/gmane.linux.kernel.pci/9081
+                 */
+                pdev->dev.dma_mask =
+                        kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+                if (!pdev->dev.dma_mask)
+                        /* ret is still -ENOMEM; */
+                        goto err;
+
+                *pdev->dev.dma_mask = dmamask;
+                pdev->dev.coherent_dma_mask = dmamask;
+        }
+
         if (res) {
                 ret = platform_device_add_resources(pdev, res, num_resources);
                 if (ret)