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-rw-r--r--drivers/s390/cio/css.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 8ecc956ecb59..370a3a2c6de7 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -529,6 +529,11 @@ static int slow_eval_known_fn(struct subchannel *sch, void *data)
rc = css_evaluate_known_subchannel(sch, 1);
if (rc == -EAGAIN)
css_schedule_eval(sch->schid);
+ /*
+ * The loop might take long time for platforms with lots of
+ * known devices. Allow scheduling here.
+ */
+ cond_resched();
}
return 0;
}