Messages in this thread Patch in this message | | | From | Moritz Fischer <> | Subject | [RFC 2/2] staging: android: ion: Add of_ion_device_get function | Date | Tue, 22 Mar 2016 15:33:51 -0700 |
| |
Allows to obtain a reference to the global /dev/ion backing struct ion_device via devicetree.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> --- drivers/staging/android/ion/ion.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index e237e9f..cea264e0 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -64,6 +64,16 @@ struct ion_device { struct dentry *clients_debug_root; }; +struct ion_device *of_ion_device_get(struct device_node *node) +{ + struct miscdevice *mdev = of_misc_get(node); + + if (IS_ERR(mdev)) + return ERR_PTR(PTR_ERR(mdev)); + + return container_of(mdev, struct ion_device, dev); +} + /** * struct ion_client - a process/hw block local address space * @node: node in the tree of all clients -- 2.7.4
| |