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-rw-r--r--drivers/s390/cio/css.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 1f2e424596a..8446d15e448 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -533,6 +533,17 @@ static int reprobe_subchannel(struct subchannel_id schid, void *data)
return ret;
}
+static void reprobe_after_idle(struct work_struct *unused)
+{
+ /* Make sure initial subchannel scan is done. */
+ wait_event(ccw_device_init_wq,
+ atomic_read(&ccw_device_init_count) == 0);
+ if (need_reprobe)
+ css_schedule_reprobe();
+}
+
+static DECLARE_WORK(reprobe_idle_work, reprobe_after_idle);
+
/* Work function used to reprobe all unregistered subchannels. */
static void reprobe_all(struct work_struct *unused)
{
@@ -540,10 +551,12 @@ static void reprobe_all(struct work_struct *unused)
CIO_MSG_EVENT(4, "reprobe start\n");
- need_reprobe = 0;
/* Make sure initial subchannel scan is done. */
- wait_event(ccw_device_init_wq,
- atomic_read(&ccw_device_init_count) == 0);
+ if (atomic_read(&ccw_device_init_count) != 0) {
+ queue_work(ccw_device_work, &reprobe_idle_work);
+ return;
+ }
+ need_reprobe = 0;
ret = for_each_subchannel_staged(NULL, reprobe_subchannel, NULL);
CIO_MSG_EVENT(4, "reprobe done (rc=%d, need_reprobe=%d)\n", ret,