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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2012-10-15 12:24:56 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-10-18 17:50:08 +0200 |
| commit | cec8546638dc634824b629e33968d6c68f8b07d6 (patch) | |
| tree | eb97150bedd22afb3ee503e6b6bf159a65fc8ee8 /drivers/s390/cio/idset.c | |
| parent | s390/cio: use generic bitmap functions (diff) | |
| download | linux-cec8546638dc634824b629e33968d6c68f8b07d6.tar.xz linux-cec8546638dc634824b629e33968d6c68f8b07d6.zip | |
s390/css: stop stsch loop after cc 3
Receiving cc=3 from store subchannel means 2 things:
* the subchannel is not provided
* there are no further subchannels in this subchannel set
With this patch we abort the store subchannel loop after cc=3 (or an
exception) and clear the subsequent bits in the subchannel id set.
Reported-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/idset.c')
| -rw-r--r-- | drivers/s390/cio/idset.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index f0973a04ec49..199bc6791177 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -90,6 +90,14 @@ void idset_sch_del(struct idset *set, struct subchannel_id schid) idset_del(set, schid.ssid, schid.sch_no); } +/* Clear ids starting from @schid up to end of subchannel set. */ +void idset_sch_del_subseq(struct idset *set, struct subchannel_id schid) +{ + int pos = schid.ssid * set->num_id + schid.sch_no; + + bitmap_clear(set->bitmap, pos, set->num_id - schid.sch_no); +} + int idset_sch_contains(struct idset *set, struct subchannel_id schid) { return idset_contains(set, schid.ssid, schid.sch_no); |