Re: [SeaBIOS] [PATCH v7 4/8] scsi: Propagate unrealize() callback to scsi-hd

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 9/25/19 1:06 PM, Sam Eiderman wrote:
> From: Sam Eiderman <shmuel.eiderman@oracle.com>
> 
> We will need to add LCHS removal logic to scsi-hd's unrealize() in the
> next commit.
> 
> Signed-off-by: Sam Eiderman <sameid@google.com>
> Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com>
> Reviewed-by: Arbel Moshe <arbel.moshe@oracle.com>
> Signed-off-by: Sam Eiderman <shmuel.eiderman@oracle.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  hw/scsi/scsi-bus.c     | 16 ++++++++++++++++
>  include/hw/scsi/scsi.h |  1 +
>  2 files changed, 17 insertions(+)
> 
> diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
> index bccb7cc4c6..359d50d6d0 100644
> --- a/hw/scsi/scsi-bus.c
> +++ b/hw/scsi/scsi-bus.c
> @@ -59,6 +59,14 @@ static void scsi_device_realize(SCSIDevice *s, Error **errp)
>      }
>  }
>  
> +static void scsi_device_unrealize(SCSIDevice *s, Error **errp)
> +{
> +    SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
> +    if (sc->unrealize) {
> +        sc->unrealize(s, errp);
> +    }
> +}
> +
>  int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
>                         void *hba_private)
>  {
> @@ -217,12 +225,20 @@ static void scsi_qdev_realize(DeviceState *qdev, Error **errp)
>  static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
>  {
>      SCSIDevice *dev = SCSI_DEVICE(qdev);
> +    Error *local_err = NULL;
>  
>      if (dev->vmsentry) {
>          qemu_del_vm_change_state_handler(dev->vmsentry);
>      }
>  
>      scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE));
> +
> +    scsi_device_unrealize(dev, &local_err);
> +    if (local_err) {
> +        error_propagate(errp, local_err);
> +        return;
> +    }
> +
>      blockdev_mark_auto_del(dev->conf.blk);
>  }
>  
> diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
> index d77a92361b..332ef602f4 100644
> --- a/include/hw/scsi/scsi.h
> +++ b/include/hw/scsi/scsi.h
> @@ -59,6 +59,7 @@ struct SCSIRequest {
>  typedef struct SCSIDeviceClass {
>      DeviceClass parent_class;
>      void (*realize)(SCSIDevice *dev, Error **errp);
> +    void (*unrealize)(SCSIDevice *dev, Error **errp);
>      int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
>                       void *hba_private);
>      SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun,
>