diff options
| author | Hannes Reinecke <hare@suse.de> | 2020-02-28 10:53:13 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-29 04:54:51 +0300 |
| commit | 2bb955840c1dc44746af8a7873d9a0ba70debbd6 (patch) | |
| tree | fa78adae27c16e7378390d6c44e8c8720c21586d | |
| parent | 5646e13a95502a6944f369f8542df3d3ab871972 (diff) | |
| download | linux-2bb955840c1dc44746af8a7873d9a0ba70debbd6.tar.xz | |
scsi: core: add scsi_host_(block,unblock) helper function
Add helper functions to call scsi_internal_device_block()/
scsi_internal_device_unblock() for all attached devices on a SCSI host.
Link: https://lore.kernel.org/r/20200228075318.91255-9-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 30 | ||||
| -rw-r--r-- | include/scsi/scsi_host.h | 2 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 610ee41fa54c..a48a5727831b 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -2845,6 +2845,36 @@ scsi_target_unblock(struct device *dev, enum scsi_device_state new_state) } EXPORT_SYMBOL_GPL(scsi_target_unblock); +int +scsi_host_block(struct Scsi_Host *shost) +{ + struct scsi_device *sdev; + int ret = 0; + + shost_for_each_device(sdev, shost) { + ret = scsi_internal_device_block(sdev); + if (ret) + break; + } + return ret; +} +EXPORT_SYMBOL_GPL(scsi_host_block); + +int +scsi_host_unblock(struct Scsi_Host *shost, int new_state) +{ + struct scsi_device *sdev; + int ret = 0; + + shost_for_each_device(sdev, shost) { + ret = scsi_internal_device_unblock(sdev, new_state); + if (ret) + break; + } + return ret; +} +EXPORT_SYMBOL_GPL(scsi_host_unblock); + /** * scsi_kmap_atomic_sg - find and atomically map an sg-elemnt * @sgl: scatter-gather list diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 25bef781cbe1..613c3820028e 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -758,6 +758,8 @@ static inline int scsi_host_scan_allowed(struct Scsi_Host *shost) extern void scsi_unblock_requests(struct Scsi_Host *); extern void scsi_block_requests(struct Scsi_Host *); +extern int scsi_host_block(struct Scsi_Host *shost); +extern int scsi_host_unblock(struct Scsi_Host *shost, int new_state); struct class_container; |