diff options
Diffstat (limited to 'drivers/scsi/virtio_scsi.c')
| -rw-r--r-- | drivers/scsi/virtio_scsi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index d07d24c06b54..c5558c45ab3a 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -330,7 +330,7 @@ static void virtscsi_handle_param_change(struct virtio_scsi *vscsi, scsi_device_put(sdev); } -static void virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) +static int virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) { struct scsi_device *sdev; struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev); @@ -338,6 +338,11 @@ static void virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) int result, inquiry_len, inq_result_len = 256; char *inq_result = kmalloc(inq_result_len, GFP_KERNEL); + if (!inq_result) { + kfree(inq_result); + return -ENOMEM; + } + shost_for_each_device(sdev, shost) { inquiry_len = sdev->inquiry_len ? sdev->inquiry_len : 36; @@ -347,8 +352,8 @@ static void virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) memset(inq_result, 0, inq_result_len); - result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE, - inq_result, inquiry_len, NULL, + result = scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN, + inq_result, inquiry_len, SD_TIMEOUT, SD_MAX_RETRIES, NULL); if (result == 0 && inq_result[0] >> 5) { @@ -366,6 +371,7 @@ static void virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) } kfree(inq_result); + return 0; } static void virtscsi_handle_event(struct work_struct *work) @@ -377,9 +383,13 @@ static void virtscsi_handle_event(struct work_struct *work) if (event->event & cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_EVENTS_MISSED)) { + int ret; + event->event &= ~cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_EVENTS_MISSED); - virtscsi_rescan_hotunplug(vscsi); + ret = virtscsi_rescan_hotunplug(vscsi); + if (ret) + return; scsi_scan_host(virtio_scsi_host(vscsi->vdev)); } |