diff options
| author |   Christoph Hellwig <hch@lst.de> | 2022-03-08 06:51:49 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-08 19:40:00 -0700 |
| commit | e7f76552277ca79d9dfe4c59f7b3620a98467f9c (patch) | |
| tree | 251b58be6faf96d6f9e383678f1f344b89d2d9bc /include/scsi/scsi_driver.h | |
| parent | blk-mq: handle already freed tags gracefully in blk_mq_free_rqs (diff) | |
| download | linux-dev-e7f76552277ca79d9dfe4c59f7b3620a98467f9c.tar.xz linux-dev-e7f76552277ca79d9dfe4c59f7b3620a98467f9c.zip | |
scsi: don't use disk->private_data to find the scsi_driver
Requiring every ULP to have the scsi_drive as first member of the
private data is rather fragile and not necessary anyway. Just use
the driver hanging off the SCSI device instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220308055200.735835-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/scsi/scsi_driver.h')
| -rw-r--r-- | include/scsi/scsi_driver.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h index 6dffa8555a39..4ce1988b2ba0 100644 --- a/include/scsi/scsi_driver.h +++ b/include/scsi/scsi_driver.h @@ -4,11 +4,10 @@ #include <linux/blk_types.h> #include <linux/device.h> +#include <scsi/scsi_cmnd.h> struct module; struct request; -struct scsi_cmnd; -struct scsi_device; struct scsi_driver { struct device_driver gendrv; @@ -31,4 +30,10 @@ extern int scsi_register_interface(struct class_interface *); #define scsi_unregister_interface(intf) \ class_interface_unregister(intf) +/* make sure not to use it with passthrough commands */ +static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd) +{ + return to_scsi_driver(cmd->device->sdev_gendev.driver); +} + #endif /* _SCSI_SCSI_DRIVER_H */ |