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Commit 233faec9 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/con3270: optionally disable auto update 



This patch adds a parameter 'auto_update' to the con3270
driver, causing the 'auto_update' feature to be disabled
if unset.
The 'auto_update' feature will cause the con3270 driver
to switch to the console view whenever new system messages
are displayed, which makes working on the 3270 terminal
awkward.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6e5a40a4

drivers/s390/char/con3270.c

+7 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 *     Copyright IBM Corp. 2003, 2009

 */



#include <linux/module.h>

#include <linux/console.h>

#include <linux/init.h>

#include <linux/interrupt.h>
@@ -30,6 +31,9 @@ 


static struct raw3270_fn con3270_fn;



static bool auto_update = 1;

module_param(auto_update, bool, 0);



/*

 * Main 3270 console view data structure.

 */
@@ -204,6 +208,8 @@ con3270_update(struct con3270 *cp) 
	struct string *s, *n;

	int rc;



	if (!auto_update && !raw3270_view_active(&cp->view))

		return;

	if (cp->view.dev)

		raw3270_activate_view(&cp->view);
@@ -529,6 +535,7 @@ con3270_flush(void) 
	if (!cp->view.dev)

		return;

	raw3270_pm_unfreeze(&cp->view);

	raw3270_activate_view(&cp->view);

	spin_lock_irqsave(&cp->view.lock, flags);

	con3270_wait_write(cp);

	cp->nr_up = 0;

drivers/s390/char/raw3270.c

+9 −0
Original line number Diff line number Diff line
@@ -275,6 +275,15 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view, 
	return 0;

}



int

raw3270_view_active(struct raw3270_view *view)

{

	struct raw3270 *rp = view->dev;



	return rp && rp->view == view &&

		!test_bit(RAW3270_FLAGS_FROZEN, &rp->flags);

}



int

raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)

{

drivers/s390/char/raw3270.h

+1 −0
Original line number Diff line number Diff line
@@ -173,6 +173,7 @@ int raw3270_start_locked(struct raw3270_view *, struct raw3270_request *); 
int raw3270_start_irq(struct raw3270_view *, struct raw3270_request *);

int raw3270_reset(struct raw3270_view *);

struct raw3270_view *raw3270_view(struct raw3270_view *);

int raw3270_view_active(struct raw3270_view *);



/* Reference count inliner for view structures. */

static inline void