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authorFrank Blaschka <frank.blaschka@de.ibm.com>2011-12-20 02:56:35 +0400
committerDavid S. Miller <davem@davemloft.net>2011-12-20 23:05:04 +0400
commit3f36b890dea7c2fc2fe25fb507552a46a226048a (patch)
tree692b10c0a64af8ed7585fd540b786318122ca29b /drivers/s390
parent08e3356cc2c0ce8f3359b3d2636c897ac71240ce (diff)
downloadlinux-3f36b890dea7c2fc2fe25fb507552a46a226048a.tar.xz
qeth: improve recovery during resource shortage
In case there are no system resources to run a recovery we have to clear recovery bitmasks so a further automatic or manual driven recovery can fix up the device. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/net/qeth_core_main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index fff57de78943..680040572bcb 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1329,6 +1329,7 @@ static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
static void qeth_start_kernel_thread(struct work_struct *work)
{
+ struct task_struct *ts;
struct qeth_card *card = container_of(work, struct qeth_card,
kernel_thread_starter);
QETH_CARD_TEXT(card , 2, "strthrd");
@@ -1336,9 +1337,15 @@ static void qeth_start_kernel_thread(struct work_struct *work)
if (card->read.state != CH_STATE_UP &&
card->write.state != CH_STATE_UP)
return;
- if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
- kthread_run(card->discipline.recover, (void *) card,
+ if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
+ ts = kthread_run(card->discipline.recover, (void *)card,
"qeth_recover");
+ if (IS_ERR(ts)) {
+ qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
+ qeth_clear_thread_running_bit(card,
+ QETH_RECOVER_THREAD);
+ }
+ }
}
static int qeth_setup_card(struct qeth_card *card)