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authorKlaus D. Wacker <kdwacker@de.ibm.com>2007-08-22 13:51:38 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-08-22 13:51:47 +0200
commitf276730f8da0e8136d8491b6ef44fc719d450a1b (patch)
treeac6d0545d41e5c70c7c3c5c84c9a9c4fae7f7919 /drivers/pci/syscall.c
parent23eb68c569cdbaad1a88015be1d69c565cd3926a (diff)
[S390] qdio: fix EQBS handling on CCQ96
QDIO returned from EQBS instruction in any case after return code CCQ=96 was issued regardless whether buffer states for at least one buffer were extracted or not. This caused FCP devices to hang when running under z/VM and having QIOASSASIST=ON and having high I/O rates. In order to fix this qdio return code processing of EQBS instruction after CCQ=96 is changed that buffers are returned and if no buffers where extracted the instruction is repeated at once. Signed-off-by: Klaus D. Wacker <kdwacker@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/pci/syscall.c')
0 files changed, 0 insertions, 0 deletions