diff options
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index ed8b9ac805e6..f8faf8b3d965 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -1727,6 +1727,13 @@ static const struct hv_vmbus_device_id id_table[] = { MODULE_DEVICE_TABLE(vmbus, id_table); +static const struct { guid_t guid; } fc_guid = { HV_SYNTHFC_GUID }; + +static bool hv_dev_is_fc(struct hv_device *hv_dev) +{ + return guid_equal(&fc_guid.guid, &hv_dev->dev_type); +} + static int storvsc_probe(struct hv_device *device, const struct hv_vmbus_device_id *dev_id) { @@ -1837,8 +1844,7 @@ static int storvsc_probe(struct hv_device *device, /* * Set the number of HW queues we are supporting. */ - if (stor_device->num_sc != 0) - host->nr_hw_queues = stor_device->num_sc + 1; + host->nr_hw_queues = num_present_cpus(); /* * Set the error handler work queue. @@ -1935,11 +1941,45 @@ static int storvsc_remove(struct hv_device *dev) return 0; } +static int storvsc_suspend(struct hv_device *hv_dev) +{ + struct storvsc_device *stor_device = hv_get_drvdata(hv_dev); + struct Scsi_Host *host = stor_device->host; + struct hv_host_device *host_dev = shost_priv(host); + + storvsc_wait_to_drain(stor_device); + + drain_workqueue(host_dev->handle_error_wq); + + vmbus_close(hv_dev->channel); + + memset(stor_device->stor_chns, 0, + num_possible_cpus() * sizeof(void *)); + + kfree(stor_device->stor_chns); + stor_device->stor_chns = NULL; + + cpumask_clear(&stor_device->alloced_cpus); + + return 0; +} + +static int storvsc_resume(struct hv_device *hv_dev) +{ + int ret; + + ret = storvsc_connect_to_vsp(hv_dev, storvsc_ringbuffer_size, + hv_dev_is_fc(hv_dev)); + return ret; +} + static struct hv_driver storvsc_drv = { .name = KBUILD_MODNAME, .id_table = id_table, .probe = storvsc_probe, .remove = storvsc_remove, + .suspend = storvsc_suspend, + .resume = storvsc_resume, .driver = { .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, |