| commit | 8340ab60b3624386eaa24fa21bdb4e6775066ccf | |
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| Mon, 2 May 2016 12:53:29 +0000 (2 14:53 +0200) | ||
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| Wed, 4 May 2016 14:29:53 +0000 (4 16:29 +0200) | ||
| tree | d0e7952f4a44d6733e448006f8a8fc442f1c08c5 | treesnapshot (tar.gz zip) |
| parent | 2e63a3a66655d5fe5d85c090b009979870436c00 | commitdiff |
s390/3270: avoid endless I/O loop with disconnected 3270 terminals
If a 3270 terminal is disconnected while the tty view is active
the 3270 driver goes into an endless loop of failed I/O requests
until the terminal is connected again.
Add code to the raw3270 interrupt handler to check for unit checks
due to failed I/O requests and put the device to sleep with the
RAW3270_FLAGS_BUSY flag until a unsolicited device end interrupt
indicates that the device can be used again. while we are at it
simplify the 3270 irq handling and remove unnecessary code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
If a 3270 terminal is disconnected while the tty view is active
the 3270 driver goes into an endless loop of failed I/O requests
until the terminal is connected again.
Add code to the raw3270 interrupt handler to check for unit checks
due to failed I/O requests and put the device to sleep with the
RAW3270_FLAGS_BUSY flag until a unsolicited device end interrupt
indicates that the device can be used again. while we are at it
simplify the 3270 irq handling and remove unnecessary code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>