staging: gasket: save struct device for a gasket device

Save the struct device pointer to a gasket device in gasket's metadata,
to facilitate use of standard logging calls and in anticipation of
non-PCI gasket devices in the future.
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/gasket_core.c

@@ -450,6 +450,7 @@ static int gasket_alloc_dev(
 	gasket_dev->internal_desc = internal_desc;
 	gasket_dev->dev_idx = dev_idx;
 	snprintf(gasket_dev->kobj_name, GASKET_NAME_MAX, "%s", kobj_name);
+	gasket_dev->dev = parent;
 	/* gasket_bar_data is uninitialized. */
 	gasket_dev->num_page_tables = driver_desc->num_page_tables;
 	/* max_page_table_size and *page table are uninit'ed */
@@ -925,7 +926,7 @@ static int gasket_enable_dev(
 			&gasket_dev->bar_data[
 				driver_desc->page_table_bar_index],
 			&driver_desc->page_table_configs[tbl_idx],
-			&gasket_dev->pci_dev->dev, gasket_dev->pci_dev, true);
+			gasket_dev->dev, gasket_dev->pci_dev, true);
 		if (ret) {
 			gasket_log_error(
 				gasket_dev,
@@ -2028,7 +2029,7 @@ const struct gasket_driver_desc *gasket_get_driver_desc(struct gasket_dev *dev)
  */
 struct device *gasket_get_device(struct gasket_dev *dev)
 {
-	return &dev->pci_dev->dev;
+	return dev->dev;
 }
 
 /**

drivers/staging/gasket/gasket_core.h

@@ -263,6 +263,9 @@ struct gasket_dev {
 	/* Pointer to the internal driver description for this device. */
 	struct gasket_internal_desc *internal_desc;
 
+	/* Device info */
+	struct device *dev;
+
 	/* PCI subsystem metadata. */
 	struct pci_dev *pci_dev;