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In special conditions where a subchannel rejects the HALT I/O- instruction with a busy indication (cc 2), I/O may stall. I/O request termination logic retries HALT I/O indefinitely because it expects HALT I/O to alter the subchannel status which is not true when cc 2 is returned. In case of a busy indication, try CLEAR I/O instruction immediately. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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block | ||
char | ||
cio | ||
crypto | ||
net | ||
scsi | ||
ebcdic.c | ||
Kconfig | ||
Makefile | ||
s390_rdev.c | ||
s390mach.c | ||
s390mach.h | ||
sysinfo.c |