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| author | Martin Schwidefsky | 2016-05-02 14:53:29 +0200 |
|---|---|---|
| committer | Martin Schwidefsky | 2016-05-04 16:29:53 +0200 |
| commit | 8340ab60b3624386eaa24fa21bdb4e6775066ccf (patch) | |
| tree | d0e7952f4a44d6733e448006f8a8fc442f1c08c5 /mm | |
| parent | s390/3270: fix garbled output on 3270 tty view (diff) | |
| download | kernel-qcow2-linux-8340ab60b3624386eaa24fa21bdb4e6775066ccf.tar.gz kernel-qcow2-linux-8340ab60b3624386eaa24fa21bdb4e6775066ccf.tar.xz kernel-qcow2-linux-8340ab60b3624386eaa24fa21bdb4e6775066ccf.zip | |
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>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions