s390/qdio: simplify ACK tracking

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Current code uses a 'polling' flag to keep track of whether an Input
Queue has any ACKed SBALs. QEBSM devices might have multiple ACKed
SBALs, and those are tracked separately with 'ack_count'.

By also setting ack_count for non-QEBSM devices (to a fixed value of 1),
we can use 'ack_count != 0' as replacement for the polling flag.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Julian Wiedmann 2019-11-25 14:18:29 +01:00 • committed by Vasily Gorbik

parent fcd98d4002

commit 0b6f499022

3 changed files with 14 additions and 24 deletions

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4

drivers/s390/cio/qdio.h

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5

drivers/s390/cio/qdio_debug.c

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29

drivers/s390/cio/qdio_main.c

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