On 2020-06-16 13:43, Thomas Huth wrote:
On 15/06/2020 11.32, Pierre Morel wrote:
A second step when testing the channel subsystem is to prepare a channel
for use.
This includes:
- Get the current subchannel Information Block (SCHIB) using STSCH
- Update it in memory to set the ENABLE bit
- Tell the CSS that the SCHIB has been modified using MSCH
- Get the SCHIB from the CSS again to verify that the subchannel is
enabled.
- If the command succeeds but subchannel is not enabled retry a
predefined retries count.
- If the command fails, report the failure and do not retry, even
if cc indicates a busy/status pending as we do not expect this.
This tests the MSCH instruction to enable a channel succesfuly.
s/succesfuly/successfully/
yes.
This some retries are done and in case of error, and if the retries
count is exceeded, a report is made.
That sentence needs some fixes, too ;-)
With the commit description fixed:
Acked-by: Thomas Huth <thuth@xxxxxxxxxx>
Thanks,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
