[PATCH 04/27] habanalabs: save class in hdev

[Oded Gabbay]

It is more concise than to pass it to device init. Once we will add the
accel class, then we won't need to change the function signatures.

Signed-off-by: Oded Gabbay <ogabbay at kernel.org>
---
 drivers/accel/habanalabs/common/device.c         | 16 ++++++++--------
 drivers/accel/habanalabs/common/habanalabs.h     |  4 +++-
 drivers/accel/habanalabs/common/habanalabs_drv.c |  3 ++-
 3 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/drivers/accel/habanalabs/common/device.c b/drivers/accel/habanalabs/common/device.c
index ed26b7d20d19..194c282d7e55 100644
--- a/drivers/accel/habanalabs/common/device.c
+++ b/drivers/accel/habanalabs/common/device.c
@@ -617,7 +617,7 @@ static void device_release_func(struct device *dev)
  * device_init_cdev - Initialize cdev and device for habanalabs device
  *
  * @hdev: pointer to habanalabs device structure
- * @hclass: pointer to the class object of the device
+ * @class: pointer to the class object of the device
  * @minor: minor number of the specific device
  * @fpos: file operations to install for this device
  * @name: name of the device as it will appear in the filesystem
@@ -626,7 +626,7 @@ static void device_release_func(struct device *dev)
  *
  * Initialize a cdev and a Linux device for habanalabs's device.
  */
-static int device_init_cdev(struct hl_device *hdev, struct class *hclass,
+static int device_init_cdev(struct hl_device *hdev, struct class *class,
 				int minor, const struct file_operations *fops,
 				char *name, struct cdev *cdev,
 				struct device **dev)
@@ -640,7 +640,7 @@ static int device_init_cdev(struct hl_device *hdev, struct class *hclass,
 
 	device_initialize(*dev);
 	(*dev)->devt = MKDEV(hdev->major, minor);
-	(*dev)->class = hclass;
+	(*dev)->class = class;
 	(*dev)->release = device_release_func;
 	dev_set_drvdata(*dev, hdev);
 	dev_set_name(*dev, "%s", name);
@@ -1939,7 +1939,7 @@ void hl_notifier_event_send_all(struct hl_device *hdev, u64 event_mask)
 	mutex_unlock(&hdev->fpriv_ctrl_list_lock);
 }
 
-static int create_cdev(struct hl_device *hdev, struct class *hclass)
+static int create_cdev(struct hl_device *hdev)
 {
 	char *name;
 	int rc;
@@ -1953,7 +1953,7 @@ static int create_cdev(struct hl_device *hdev, struct class *hclass)
 	}
 
 	/* Initialize cdev and device structures */
-	rc = device_init_cdev(hdev, hclass, hdev->id, &hl_ops, name,
+	rc = device_init_cdev(hdev, hdev->hclass, hdev->id, &hl_ops, name,
 				&hdev->cdev, &hdev->dev);
 
 	kfree(name);
@@ -1968,7 +1968,7 @@ static int create_cdev(struct hl_device *hdev, struct class *hclass)
 	}
 
 	/* Initialize cdev and device structures for control device */
-	rc = device_init_cdev(hdev, hclass, hdev->id_control, &hl_ctrl_ops,
+	rc = device_init_cdev(hdev, hdev->hclass, hdev->id_control, &hl_ctrl_ops,
 				name, &hdev->cdev_ctrl, &hdev->dev_ctrl);
 
 	kfree(name);
@@ -1993,12 +1993,12 @@ static int create_cdev(struct hl_device *hdev, struct class *hclass)
  * ASIC specific initialization functions. Finally, create the cdev and the
  * Linux device to expose it to the user
  */
-int hl_device_init(struct hl_device *hdev, struct class *hclass)
+int hl_device_init(struct hl_device *hdev)
 {
 	int i, rc, cq_cnt, user_interrupt_cnt, cq_ready_cnt;
 	bool add_cdev_sysfs_on_err = false;
 
-	rc = create_cdev(hdev, hclass);
+	rc = create_cdev(hdev);
 	if (rc)
 		goto out_disabled;
 
diff --git a/drivers/accel/habanalabs/common/habanalabs.h b/drivers/accel/habanalabs/common/habanalabs.h
index fa05e76d3d21..d98e6c0feb24 100644
--- a/drivers/accel/habanalabs/common/habanalabs.h
+++ b/drivers/accel/habanalabs/common/habanalabs.h
@@ -3090,6 +3090,7 @@ struct hl_reset_info {
  *		   (required only for PCI address match mode)
  * @pcie_bar: array of available PCIe bars virtual addresses.
  * @rmmio: configuration area address on SRAM.
+ * @hclass: pointer to the habanalabs class.
  * @cdev: related char device.
  * @cdev_ctrl: char device for control operations only (INFO IOCTL)
  * @dev: related kernel basic device structure.
@@ -3274,6 +3275,7 @@ struct hl_device {
 	u64				pcie_bar_phys[HL_PCI_NUM_BARS];
 	void __iomem			*pcie_bar[HL_PCI_NUM_BARS];
 	void __iomem			*rmmio;
+	struct class			*hclass;
 	struct cdev			cdev;
 	struct cdev			cdev_ctrl;
 	struct device			*dev;
@@ -3612,7 +3614,7 @@ int hl_ctx_get_fences(struct hl_ctx *ctx, u64 *seq_arr,
 void hl_ctx_mgr_init(struct hl_ctx_mgr *mgr);
 void hl_ctx_mgr_fini(struct hl_device *hdev, struct hl_ctx_mgr *mgr);
 
-int hl_device_init(struct hl_device *hdev, struct class *hclass);
+int hl_device_init(struct hl_device *hdev);
 void hl_device_fini(struct hl_device *hdev);
 int hl_device_suspend(struct hl_device *hdev);
 int hl_device_resume(struct hl_device *hdev);
diff --git a/drivers/accel/habanalabs/common/habanalabs_drv.c b/drivers/accel/habanalabs/common/habanalabs_drv.c
index 03dae57dc838..8ccc3d6519b5 100644
--- a/drivers/accel/habanalabs/common/habanalabs_drv.c
+++ b/drivers/accel/habanalabs/common/habanalabs_drv.c
@@ -324,6 +324,7 @@ static void copy_kernel_module_params_to_device(struct hl_device *hdev)
 	hdev->asic_prop.fw_security_enabled = is_asic_secured(hdev->asic_type);
 
 	hdev->major = hl_major;
+	hdev->hclass = hl_class;
 	hdev->memory_scrub = memory_scrub;
 	hdev->reset_on_lockup = reset_on_lockup;
 	hdev->boot_error_status_mask = boot_error_status_mask;
@@ -552,7 +553,7 @@ static int hl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	pci_enable_pcie_error_reporting(pdev);
 
-	rc = hl_device_init(hdev, hl_class);
+	rc = hl_device_init(hdev);
 	if (rc) {
 		dev_err(&pdev->dev, "Fatal error during habanalabs device init\n");
 		rc = -ENODEV;
-- 
2.25.1