s390/cmf: simplify cmb_copy_wait

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No need for refcounting - the data can be on stack. Also change
the locking in this function to only use spin_lock_irq (the
function waits, thus it's never called from IRQ context).

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Sebastian Ott 2017-09-06 19:05:29 +02:00 • committed by Martin Schwidefsky

parent eeec1e435f

commit 60f3eac3a1

1 changed files with 23 additions and 49 deletions

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72

drivers/s390/cio/cmf.c

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