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s390x: refactor error handling for MSCH handler

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Simplify the error handling of the MSCH.  Let the code detecting the
condition tell (in a less ambiguous way) how it's to be handled. No
changes in behavior.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20171017140453.51099-8-pasic@linux.vnet.ibm.com>
[CH: fix return code for fctl != 0]
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Halil Pasic 2017-10-17 16:04:53 +02:00 • committed by Cornelia Huck
parent ae9f1be3bd
commit 6bb6f19473
3 changed files with 10 additions and 33 deletions
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2
include/hw/s390x/css.h
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@ -239,7 +239,7 @@ bool css_subch_visible(SubchDev *sch);
void css_conditional_io_interrupt(SubchDev *sch);
int css_do_stsch(SubchDev *sch, SCHIB *schib);
bool css_schid_final(int m, uint8_t cssid, uint8_t ssid, uint16_t schid);
int css_do_msch(SubchDev *sch, const SCHIB *schib);
IOInstEnding css_do_msch(SubchDev *sch, const SCHIB *schib);
IOInstEnding css_do_xsch(SubchDev *sch);
IOInstEnding css_do_csch(SubchDev *sch);
IOInstEnding css_do_hsch(SubchDev *sch);