s390/dasd: fix hanging devices after path events

The processing of the dasd_block tasklet may have been interrupted
by a path event.
Restart the dasd tasklets in sleep_on_immediately function.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 17150a77898433c27e58b2a8ac9ccb81bd228ddb..451bf99582ff09948c04e6634ca2d381c0d6a45a 100644 (file)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2392,6 +2392,12 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
                rc = cqr->intrc;
        else
                rc = -EIO;
+
+       /* kick tasklets */
+       dasd_schedule_device_bh(device);
+       if (device->block)
+               dasd_schedule_block_bh(device->block);
+
        return rc;
 }