diff options
| -rw-r--r-- | drivers/s390/block/dasd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 57fd66357b95..1aec8ff0b587 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -38,6 +38,8 @@ */ #define DASD_CHANQ_MAX_SIZE 4 +#define DASD_DIAG_MOD "dasd_diag_mod" + /* * SECTION: exported variables of dasd.c */ @@ -3300,6 +3302,21 @@ int dasd_generic_set_online(struct ccw_device *cdev, discipline = base_discipline; if (device->features & DASD_FEATURE_USEDIAG) { if (!dasd_diag_discipline_pointer) { + /* Try to load the required module. */ + rc = request_module(DASD_DIAG_MOD); + if (rc) { + pr_warn("%s Setting the DASD online failed " + "because the required module %s " + "could not be loaded (rc=%d)\n", + dev_name(&cdev->dev), DASD_DIAG_MOD, + rc); + dasd_delete_device(device); + return -ENODEV; + } + } + /* Module init could have failed, so check again here after + * request_module(). */ + if (!dasd_diag_discipline_pointer) { pr_warn("%s Setting the DASD online failed because of missing DIAG discipline\n", dev_name(&cdev->dev)); dasd_delete_device(device); |