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Commit 1bc6664b authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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s390/cio: use device_lock during cmb activation 



Hold the device_lock during [de]activation of the channel measurement
block to synchronize concurrent usage of these functions.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 279b8f9a
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