s390/sclp: use LIST_HEAD for Initialization

For static initialization of list_head variable, use LIST_HEAD
instead of INIT_LIST_HEAD function.
Suggested-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

drivers/s390/char/sclp.c

@@ -37,10 +37,10 @@ static sccb_mask_t sclp_receive_mask;
 static sccb_mask_t sclp_send_mask;
 
 /* List of registered event listeners and senders. */
-static struct list_head sclp_reg_list;
+static LIST_HEAD(sclp_reg_list);
 
 /* List of queued requests. */
-static struct list_head sclp_req_queue;
+static LIST_HEAD(sclp_req_queue);
 
 /* Data for read and and init requests. */
 static struct sclp_req sclp_read_req;
@@ -1178,8 +1178,6 @@ sclp_init(void)
 	sclp_init_sccb = (void *) __get_free_page(GFP_ATOMIC | GFP_DMA);
 	BUG_ON(!sclp_read_sccb || !sclp_init_sccb);
 	/* Set up variables */
-	INIT_LIST_HEAD(&sclp_req_queue);
-	INIT_LIST_HEAD(&sclp_reg_list);
 	list_add(&sclp_state_change_event.list, &sclp_reg_list);
 	timer_setup(&sclp_request_timer, NULL, 0);
 	timer_setup(&sclp_queue_timer, sclp_req_queue_timeout, 0);

drivers/s390/char/sclp_con.c

@@ -28,9 +28,9 @@
 /* Lock to guard over changes to global variables */
 static DEFINE_SPINLOCK(sclp_con_lock);
 /* List of free pages that can be used for console output buffering */
-static struct list_head sclp_con_pages;
+static LIST_HEAD(sclp_con_pages);
 /* List of full struct sclp_buffer structures ready for output */
-static struct list_head sclp_con_outqueue;
+static LIST_HEAD(sclp_con_outqueue);
 /* Pointer to current console buffer */
 static struct sclp_buffer *sclp_conbuf;
 /* Timer for delayed output of console messages */
@@ -323,12 +323,10 @@ sclp_console_init(void)
 	if (rc)
 		return rc;
 	/* Allocate pages for output buffering */
-	INIT_LIST_HEAD(&sclp_con_pages);
 	for (i = 0; i < sclp_console_pages; i++) {
 		page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 		list_add_tail(page, &sclp_con_pages);
 	}
-	INIT_LIST_HEAD(&sclp_con_outqueue);
 	sclp_conbuf = NULL;
 	timer_setup(&sclp_con_timer, sclp_console_timeout, 0);
 

drivers/s390/char/sclp_tty.c

@@ -37,9 +37,9 @@
 /* Lock to guard over changes to global variables. */
 static DEFINE_SPINLOCK(sclp_tty_lock);
 /* List of free pages that can be used for console output buffering. */
-static struct list_head sclp_tty_pages;
+static LIST_HEAD(sclp_tty_pages);
 /* List of full struct sclp_buffer structures ready for output. */
-static struct list_head sclp_tty_outqueue;
+static LIST_HEAD(sclp_tty_outqueue);
 /* Counter how many buffers are emitted. */
 static int sclp_tty_buffer_count;
 /* Pointer to current console buffer. */
@@ -516,7 +516,6 @@ sclp_tty_init(void)
 		return rc;
 	}
 	/* Allocate pages for output buffering */
-	INIT_LIST_HEAD(&sclp_tty_pages);
 	for (i = 0; i < MAX_KMEM_PAGES; i++) {
 		page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 		if (page == NULL) {
@@ -525,7 +524,6 @@ sclp_tty_init(void)
 		}
 		list_add_tail((struct list_head *) page, &sclp_tty_pages);
 	}
-	INIT_LIST_HEAD(&sclp_tty_outqueue);
 	timer_setup(&sclp_tty_timer, sclp_tty_timeout, 0);
 	sclp_ttybuf = NULL;
 	sclp_tty_buffer_count = 0;

drivers/s390/char/sclp_vt220.c

@@ -64,10 +64,10 @@ static struct tty_port sclp_vt220_port;
 static DEFINE_SPINLOCK(sclp_vt220_lock);
 
 /* List of empty pages to be used as write request buffers */
-static struct list_head sclp_vt220_empty;
+static LIST_HEAD(sclp_vt220_empty);
 
 /* List of pending requests */
-static struct list_head sclp_vt220_outqueue;
+static LIST_HEAD(sclp_vt220_outqueue);
 
 /* Suspend mode flag */
 static int sclp_vt220_suspended;
@@ -693,8 +693,6 @@ static int __init __sclp_vt220_init(int num_pages)
 	sclp_vt220_init_count++;
 	if (sclp_vt220_init_count != 1)
 		return 0;
-	INIT_LIST_HEAD(&sclp_vt220_empty);
-	INIT_LIST_HEAD(&sclp_vt220_outqueue);
 	timer_setup(&sclp_vt220_timer, sclp_vt220_timeout, 0);
 	tty_port_init(&sclp_vt220_port);
 	sclp_vt220_current_request = NULL;