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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2020-10-06 15:39:02 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-12 11:50:51 -0400 |
| commit | 8ff34495601067d02edb54b4346cace84ec4e1df (patch) | |
| tree | 7cf8d0bf91434251488d06b8e8c2dc59c861014d | |
| parent | 8ddf958e8d62ada6395460b91ec5964ef21fed12 (diff) | |
| download | qemu-8ff34495601067d02edb54b4346cace84ec4e1df.zip qemu-8ff34495601067d02edb54b4346cace84ec4e1df.tar.gz qemu-8ff34495601067d02edb54b4346cace84ec4e1df.tar.bz2 | |
scsi/scsi_bus: Add scsi_device_get
Add scsi_device_get which finds the scsi device
and takes a reference to it.
Suggested-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200913160259.32145-8-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20201006123904.610658-12-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/scsi/scsi-bus.c | 11 | ||||
| -rw-r--r-- | include/hw/scsi/scsi.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index 7599113..eda8cb7 100644 --- a/hw/scsi/scsi-bus.c +++ b/hw/scsi/scsi-bus.c @@ -73,6 +73,17 @@ SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) return do_scsi_device_find(bus, channel, id, lun, false); } +SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int id, int lun) +{ + SCSIDevice *d; + RCU_READ_LOCK_GUARD(); + d = do_scsi_device_find(bus, channel, id, lun, false); + if (d) { + object_ref(d); + } + return d; +} + static void scsi_device_realize(SCSIDevice *s, Error **errp) { SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index 7a55cdb..09fa5c9 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -190,6 +190,7 @@ int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); int scsi_SG_IO_FROM_DEV(BlockBackend *blk, uint8_t *cmd, uint8_t cmd_size, uint8_t *buf, uint8_t buf_size); SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); +SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int target, int lun); /* scsi-generic.c. */ extern const SCSIReqOps scsi_generic_req_ops; |