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

From: Ioana Ciornei
Date: Mon Dec 10 2018 - 11:50:47 EST


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

Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
---
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