From: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@xxxxxxxxxxx>
Since drm_dev_alloc() is deprecated it is recommended to use
devm_drm_dev_alloc() instead. Update the driver to start using
devm_drm_dev_alloc().
Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@xxxxxxxxxxx>
Reviewed-by: Carl Vanderlip <quic_carlv@xxxxxxxxxxx>
Reviewed-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
Signed-off-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
---
drivers/accel/qaic/qaic.h | 7 ++-
drivers/accel/qaic/qaic_drv.c | 102 ++++++++++++++--------------------
2 files changed, 47 insertions(+), 62 deletions(-)
diff --git a/drivers/accel/qaic/qaic.h b/drivers/accel/qaic/qaic.h
index f2bd637a0d4e..9d98a10af1cb 100644
--- a/drivers/accel/qaic/qaic.h
+++ b/drivers/accel/qaic/qaic.h
@@ -27,6 +27,9 @@
#define QAIC_DBC_OFF(i) ((i) * QAIC_DBC_SIZE + QAIC_DBC_BASE)
#define to_qaic_bo(obj) container_of(obj, struct qaic_bo, base)
+#define to_qaic_drm_device(dev) container_of(dev, struct qaic_drm_device, drm)
+#define to_drm(qddev) (&(qddev)->drm)
+#define to_accel_kdev(qddev) (to_drm(qddev)->accel->kdev) /* Return Linux device of accel node */
extern bool datapath_polling;
@@ -137,6 +140,8 @@ struct qaic_device {
};
struct qaic_drm_device {
+ /* The drm device struct of this drm device */
+ struct drm_device drm;
/* Pointer to the root device struct driven by this driver */
struct qaic_device *qdev;
/*
@@ -146,8 +151,6 @@ struct qaic_drm_device {
* device is the actual physical device
*/
s32 partition_id;
- /* Pointer to the drm device struct of this drm device */
- struct drm_device *ddev;
/* Head in list of users who have opened this drm device */
struct list_head users;
/* Synchronizes access to users list */
diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c
index 49b5039f4cad..d9e1ba64d7cf 100644
--- a/drivers/accel/qaic/qaic_drv.c
+++ b/drivers/accel/qaic/qaic_drv.c
@@ -22,6 +22,7 @@
#include <drm/drm_file.h>
#include <drm/drm_gem.h>
#include <drm/drm_ioctl.h>
+#include <drm/drm_managed.h>
#include <uapi/drm/qaic_accel.h>
#include "mhi_controller.h"
@@ -55,7 +56,7 @@ static void free_usr(struct kref *kref)
static int qaic_open(struct drm_device *dev, struct drm_file *file)
{
- struct qaic_drm_device *qddev = dev->dev_private;
+ struct qaic_drm_device *qddev = to_qaic_drm_device(dev);
struct qaic_device *qdev = qddev->qdev;
struct qaic_user *usr;
int rcu_id;
@@ -170,64 +171,39 @@ static const struct drm_driver qaic_accel_driver = {
static int qaic_create_drm_device(struct qaic_device *qdev, s32 partition_id)
{
- struct qaic_drm_device *qddev;
- struct drm_device *ddev;
- struct device *pdev;
+ struct qaic_drm_device *qddev = qdev->qddev;
+ struct drm_device *drm = to_drm(qddev);
int ret;
/* Hold off implementing partitions until the uapi is determined */
if (partition_id != QAIC_NO_PARTITION)
return -EINVAL;
- pdev = &qdev->pdev->dev;
-
- qddev = kzalloc(sizeof(*qddev), GFP_KERNEL);
- if (!qddev)
- return -ENOMEM;
-
- ddev = drm_dev_alloc(&qaic_accel_driver, pdev);
- if (IS_ERR(ddev)) {
- ret = PTR_ERR(ddev);
- goto ddev_fail;
- }
-
- ddev->dev_private = qddev;
- qddev->ddev = ddev;
-
- qddev->qdev = qdev;
qddev->partition_id = partition_id;
- INIT_LIST_HEAD(&qddev->users);
- mutex_init(&qddev->users_mutex);
-
- qdev->qddev = qddev;
-
- ret = drm_dev_register(ddev, 0);
- if (ret) {
- pci_dbg(qdev->pdev, "%s: drm_dev_register failed %d\n", __func__, ret);
- goto drm_reg_fail;
- }
- return 0;
+ /*
+ * drm_dev_unregister() sets the driver data to NULL and
+ * drm_dev_register() does not update the driver data. During a SOC
+ * reset drm dev is unregistered and registered again leaving the
+ * driver data to NULL.
+ */
+ dev_set_drvdata(to_accel_kdev(qddev), drm->accel);
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ pci_dbg(qdev->pdev, "drm_dev_register failed %d\n", ret);
-drm_reg_fail:
- mutex_destroy(&qddev->users_mutex);
- qdev->qddev = NULL;
- drm_dev_put(ddev);
-ddev_fail:
- kfree(qddev);
return ret;
}
static void qaic_destroy_drm_device(struct qaic_device *qdev, s32 partition_id)
{
- struct qaic_drm_device *qddev;
+ struct qaic_drm_device *qddev = qdev->qddev;
+ struct drm_device *drm = to_drm(qddev);
struct qaic_user *usr;
- qddev = qdev->qddev;
- qdev->qddev = NULL;
- if (!qddev)
- return;
-
+ drm_dev_get(drm);
+ drm_dev_unregister(drm);
+ qddev->partition_id = 0;
/*
* Existing users get unresolvable errors till they close FDs.
* Need to sync carefully with users calling close(). The
@@ -254,13 +230,7 @@ static void qaic_destroy_drm_device(struct qaic_device *qdev, s32 partition_id)
mutex_lock(&qddev->users_mutex);
}
mutex_unlock(&qddev->users_mutex);
-
- if (qddev->ddev) {
- drm_dev_unregister(qddev->ddev);
- drm_dev_put(qddev->ddev);
- }
-
- kfree(qddev);
+ drm_dev_put(drm);
}
static int qaic_mhi_probe(struct mhi_device *mhi_dev, const struct mhi_device_id *id)
@@ -344,8 +314,20 @@ void qaic_dev_reset_clean_local_state(struct qaic_device *qdev, bool exit_reset)
qdev->in_reset = false;
}
+static void cleanup_qdev(struct qaic_device *qdev)
+{
+ int i;
+
+ for (i = 0; i < qdev->num_dbc; ++i)
+ cleanup_srcu_struct(&qdev->dbc[i].ch_lock);
+ cleanup_srcu_struct(&qdev->dev_lock);
+ pci_set_drvdata(qdev->pdev, NULL);
+ destroy_workqueue(qdev->cntl_wq);
+}
+
static struct qaic_device *create_qdev(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ struct qaic_drm_device *qddev;
struct qaic_device *qdev;
int i;
@@ -381,18 +363,18 @@ static struct qaic_device *create_qdev(struct pci_dev *pdev, const struct pci_de
INIT_LIST_HEAD(&qdev->dbc[i].bo_lists);
}
- return qdev;
-}
+ qddev = devm_drm_dev_alloc(&pdev->dev, &qaic_accel_driver, struct qaic_drm_device, drm);
+ if (IS_ERR(qddev)) {
+ cleanup_qdev(qdev);
+ return NULL;
+ }
-static void cleanup_qdev(struct qaic_device *qdev)
-{
- int i;
+ drmm_mutex_init(to_drm(qddev), &qddev->users_mutex);
+ INIT_LIST_HEAD(&qddev->users);
+ qddev->qdev = qdev;
+ qdev->qddev = qddev;
- for (i = 0; i < qdev->num_dbc; ++i)
- cleanup_srcu_struct(&qdev->dbc[i].ch_lock);
- cleanup_srcu_struct(&qdev->dev_lock);
- pci_set_drvdata(qdev->pdev, NULL);
- destroy_workqueue(qdev->cntl_wq);
+ return qdev;
}
static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev)
--
2.40.1
