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qeth: synchronize configuration interface

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Synchronize access to the drivers configuration interface.
Also do not allow configuration changes during online/offline
transition.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Blaschka
2010-05-11 19:34:47 +00:00
committed by David S. Miller
parent 65a1f898ef
commit c4949f0743
6 changed files with 243 additions and 169 deletions
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drivers/s390/net/qeth_core_main.c
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@@ -1100,6 +1100,7 @@ static int qeth_setup_card(struct qeth_card *card)
spin_lock_init(&card->lock);
spin_lock_init(&card->ip_lock);
spin_lock_init(&card->thread_mask_lock);
mutex_init(&card->conf_mutex);
card->thread_start_mask = 0;
card->thread_allowed_mask = 0;
card->thread_running_mask = 0;