[PATCH 3/5] soc: fsl: dpio: store a backpointer to the device backing the dpaa2_io

[Ioana Ciornei]

Add a new field in the dpaa2_io structure to hold a backpointer to the
actual DPIO device.

Signed-off-by: Ioana Ciornei <ioana.cior...@nxp.com>
---
 drivers/soc/fsl/dpio/dpio-driver.c  | 2 +-
 drivers/soc/fsl/dpio/dpio-service.c | 7 ++++++-
 include/soc/fsl/dpaa2-io.h          | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/fsl/dpio/dpio-driver.c 
b/drivers/soc/fsl/dpio/dpio-driver.c
index 5286723..2d4af32 100644
--- a/drivers/soc/fsl/dpio/dpio-driver.c
+++ b/drivers/soc/fsl/dpio/dpio-driver.c
@@ -176,7 +176,7 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
        if (err)
                goto err_register_dpio_irq;
 
-       priv->io = dpaa2_io_create(&desc);
+       priv->io = dpaa2_io_create(&desc, dev);
        if (!priv->io) {
                dev_err(dev, "dpaa2_io_create failed\n");
                err = -ENOMEM;
diff --git a/drivers/soc/fsl/dpio/dpio-service.c 
b/drivers/soc/fsl/dpio/dpio-service.c
index 5583d28..87e01710 100644
--- a/drivers/soc/fsl/dpio/dpio-service.c
+++ b/drivers/soc/fsl/dpio/dpio-service.c
@@ -27,6 +27,7 @@ struct dpaa2_io {
        /* protect notifications list */
        spinlock_t lock_notifications;
        struct list_head notifications;
+       struct device *dev;
 };
 
 struct dpaa2_io_store {
@@ -98,13 +99,15 @@ struct dpaa2_io *dpaa2_io_service_select(int cpu)
 /**
  * dpaa2_io_create() - create a dpaa2_io object.
  * @desc: the dpaa2_io descriptor
+ * @dev: the actual DPIO device
  *
  * Activates a "struct dpaa2_io" corresponding to the given config of an actual
  * DPIO object.
  *
  * Return a valid dpaa2_io object for success, or NULL for failure.
  */
-struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc)
+struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,
+                                struct device *dev)
 {
        struct dpaa2_io *obj = kmalloc(sizeof(*obj), GFP_KERNEL);
 
@@ -146,6 +149,8 @@ struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc 
*desc)
                dpio_by_cpu[desc->cpu] = obj;
        spin_unlock(&dpio_list_lock);
 
+       obj->dev = dev;
+
        return obj;
 }
 
diff --git a/include/soc/fsl/dpaa2-io.h b/include/soc/fsl/dpaa2-io.h
index e11eed1..5b5ba26 100644
--- a/include/soc/fsl/dpaa2-io.h
+++ b/include/soc/fsl/dpaa2-io.h
@@ -57,7 +57,8 @@ struct dpaa2_io_desc {
        u32 qman_version;
 };
 
-struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc);
+struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,
+                                struct device *dev);
 
 void dpaa2_io_down(struct dpaa2_io *d);
 
-- 
1.9.1