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path: root/drivers/s390/cio/qdio_thinint.c
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Diffstat (limited to 'drivers/s390/cio/qdio_thinint.c')
-rw-r--r--drivers/s390/cio/qdio_thinint.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 5c4e741d8221..68be6e157126 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -95,9 +95,11 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr)
}
}
-static inline u32 shared_ind_set(void)
+static inline u32 clear_shared_ind(void)
{
- return q_indicators[TIQDIO_SHARED_IND].ind;
+ if (!atomic_read(&q_indicators[TIQDIO_SHARED_IND].count))
+ return 0;
+ return xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0);
}
/**
@@ -107,7 +109,7 @@ static inline u32 shared_ind_set(void)
*/
static void tiqdio_thinint_handler(void *alsi, void *data)
{
- u32 si_used = shared_ind_set();
+ u32 si_used = clear_shared_ind();
struct qdio_q *q;
last_ai_time = S390_lowcore.int_clock;
@@ -150,13 +152,6 @@ static void tiqdio_thinint_handler(void *alsi, void *data)
qperf_inc(q, adapter_int);
}
rcu_read_unlock();
-
- /*
- * If the shared indicator was used clear it now after all queues
- * were processed.
- */
- if (si_used && shared_ind_set())
- xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0);
}
static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset)