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bh=h86QYWe84/+aRJP+nlAXGp7OtWwOWXKNZ6fAFrPDu4c=; b=Mq0Atwhn/kxVl9V09HCQ3vs18rn42qnI+UCRWMSDdaAsSjGnZBRRnyjiEeCdc6MEC2POT1 +QnTKoWtzJRvA5rrR/can8XBbfb10ernixvsumxzNxjlDp8yft7Ll3sFIwvOZN967yxte0 8EKZ6QItoXASqEjKImUnbbXQwOBPnVQ= X-MC-Unique: sdA9sgceOYiaiUkRd-kPuw-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH v8 15/17] scsi/scsi_bus: Add scsi_device_get Date: Wed, 7 Oct 2020 07:56:58 -0400 Message-Id: <20201007115700.707938-16-pbonzini@redhat.com> In-Reply-To: <20201007115700.707938-1-pbonzini@redhat.com> References: <20201007115700.707938-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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charset="utf-8" From: Maxim Levitsky Add scsi_device_get which finds the scsi device and takes a reference to it. Suggested-by: Stefan Hajnoczi Signed-off-by: Maxim Levitsky Message-Id: <20200913160259.32145-8-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini Message-Id: <20201006123904.610658-12-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini --- hw/scsi/scsi-bus.c | 11 +++++++++++ include/hw/scsi/scsi.h | 1 + 2 files changed, 12 insertions(+) diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index 7599113efe..eda8cb7e70 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); } =20 +SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int id, int lun) +{ + SCSIDevice *d; + RCU_READ_LOCK_GUARD(); + d =3D 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 =3D SCSI_DEVICE_GET_CLASS(s); diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index 7a55cdbd74..09fa5c9d2a 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 lu= n); +SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int target, int lun= ); =20 /* scsi-generic.c. */ extern const SCSIReqOps scsi_generic_req_ops; --=20 2.26.2