s390/qdio: improve handling of CIWs

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Fetch the individual CIWs when we actually need them, rather than
fetching both of them in qdio_setup_irq() and then needing to cache
them inside the qdio_irq.

Also deal with the error when a CIW is not available, instead of
silently dropping this error condition in qdio_setup_irq()'s caller.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Julian Wiedmann 2021-07-08 08:49:28 +02:00 • committed by Heiko Carstens

parent 764fc3187c

commit bd3a025dd2

3 changed files with 20 additions and 26 deletions

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4

drivers/s390/cio/qdio.h

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22

drivers/s390/cio/qdio_main.c

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20

drivers/s390/cio/qdio_setup.c

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