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Commit 39a86be1 authored Aug 19, 2015 by Martin Schwidefsky Committed by Sasha Levin Dec 02, 2015

s390/3270: redraw screen on unsolicited device end



[ Upstream commit 05bfd70bcdd3cd12c061cb77b73a11ba6f87379d ]

If a 3270 terminal is disconnected and later reconnected again,
it gets an unsolicited device end. This is currently ignored and
you have to hit the clear key to get the screen redrawn.
Add an automatic full redraw of the screen for this case.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent 465760c5

drivers/s390/char/con3270.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -413,6 +413,10 @@ con3270_irq(struct con3270 cp, struct raw3270_request rq, struct irb *irb)
		else
		/* Normal end. Copy residual count. */
		rq->rescnt = irb->scsw.cmd.count;
		} else if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
		/* Interrupt without an outstanding request -> update all */
		cp->update_flags = CON_UPDATE_ALL;
		con3270_set_timer(cp, 1);
		}
		return RAW3270_IO_DONE;
		}

drivers/s390/char/tty3270.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -659,6 +659,10 @@ tty3270_irq(struct tty3270 tp, struct raw3270_request rq, struct irb *irb)
		else
		/* Normal end. Copy residual count. */
		rq->rescnt = irb->scsw.cmd.count;
		} else if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
		/* Interrupt without an outstanding request -> update all */
		tp->update_flags = TTY_UPDATE_ALL;
		tty3270_set_timer(tp, 1);
		}
		return RAW3270_IO_DONE;
		}