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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-03-21 09:25:24 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-03-26 10:55:33 +0100 |
| commit | 233faec97a1dfef1f4bc271f9e5d33f2ba4845ca (patch) | |
| tree | cd42c8828846c9c73ecf867f9604af17bf7055f7 /drivers/s390 | |
| parent | 6e5a40a49fe16f8032c4dcd4fa5ff866da09d445 (diff) | |
| download | op-kernel-dev-233faec97a1dfef1f4bc271f9e5d33f2ba4845ca.zip op-kernel-dev-233faec97a1dfef1f4bc271f9e5d33f2ba4845ca.tar.gz | |
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: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/con3270.c | 7 | ||||
| -rw-r--r-- | drivers/s390/char/raw3270.c | 9 | ||||
| -rw-r--r-- | drivers/s390/char/raw3270.h | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index bb6b0df5..75ffe99 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -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; diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 041c65b..9f849df 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -276,6 +276,15 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view, } 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) { unsigned long flags; diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h index 359276a..e1e41c2 100644 --- a/drivers/s390/char/raw3270.h +++ b/drivers/s390/char/raw3270.h @@ -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 |
