s390/qeth: relax locking for ipato config data

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card->ipato is currently protected by the conf_mutex. But most users
also hold the ip_lock - in particular qeth_l3_add_ip().

So slightly expand the sections under ip_lock in a few places (to
effectively cover a few error & no-op cases), and then drop the
conf_mutex where it's no longer needed.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Julian Wiedmann 2020-09-23 10:36:53 +02:00 • committed by David S. Miller

parent 668e225126

commit d6e6426f69

3 changed files with 16 additions and 17 deletions

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7

drivers/s390/net/qeth_core.h

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4

drivers/s390/net/qeth_l3_main.c

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22

drivers/s390/net/qeth_l3_sys.c

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