ppdev: Remove usage of the deprecated ida_simple_xx() API

[ Upstream commit d8407f7 ]

ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().

This is less verbose.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/ba9da12fdd5cdb2c28180b7160af5042447d803f.1702962092.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: fbf740a ("ppdev: Add an error check in register_device")
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/char/ppdev.c

@@ -299,7 +299,7 @@ static int register_device(int minor, struct pp_struct *pp)
 		goto err;
 	}
 
-	index = ida_simple_get(&ida_index, 0, 0, GFP_KERNEL);
+	index = ida_alloc(&ida_index, GFP_KERNEL);
 	memset(&ppdev_cb, 0, sizeof(ppdev_cb));
 	ppdev_cb.irq_func = pp_irq;
 	ppdev_cb.flags = (pp->flags & PP_EXCL) ? PARPORT_FLAG_EXCL : 0;
@@ -310,7 +310,7 @@ static int register_device(int minor, struct pp_struct *pp)
 	if (!pdev) {
 		pr_warn("%s: failed to register device!\n", name);
 		rc = -ENXIO;
-		ida_simple_remove(&ida_index, index);
+		ida_free(&ida_index, index);
 		goto err;
 	}
 
@@ -750,7 +750,7 @@ static int pp_release(struct inode *inode, struct file *file)
 
 	if (pp->pdev) {
 		parport_unregister_device(pp->pdev);
-		ida_simple_remove(&ida_index, pp->index);
+		ida_free(&ida_index, pp->index);
 		pp->pdev = NULL;
 		pr_debug(CHRDEV "%x: unregistered pardevice\n", minor);
 	}