tree 3ce95bcd31236fe790c5ce219a46512e97cc4e1f
parent 170387a8877b2c12fee5ae901be1ef4693d06094
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1410259992 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1411635121 +0200

s390/sclp: reduce dependency on event type masks

The event type masks can change asynchronously. These changes are reported
by SCLP to the OS by state-change events which are retrieved with the read
event data command. The SCLP driver has a request queue, there is a window
where the read event data request has not completed yet but the SCLP console
drivers are trying to queue output requests. As the masks are not updated
yet the requests are discarded.

The simplest fix is to queue the console requests independent of the
event type masks and rely on SCLP to return with an error code if a
specific event type is not available.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>