4.14-stable review patch. If anyone has any objections, please let me know.
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From: Arnd Bergmann arnd@arndb.de
commit 48d83282db077f93b2cf40de120f4d6f29eb293b upstream.
A regression fix introduced a harmless type mismatch warning:
drivers/scsi/bfa/bfad_bsg.c: In function 'bfad_im_bsg_vendor_request': drivers/scsi/bfa/bfad_bsg.c:3137:35: error: initialization of 'struct bfad_im_port_s *' from 'long unsigned int' makes pointer from integer without a cast [-Werror=int-conversion] struct bfad_im_port_s *im_port = shost->hostdata[0]; ^~~~~ drivers/scsi/bfa/bfad_bsg.c: In function 'bfad_im_bsg_els_ct_request': drivers/scsi/bfa/bfad_bsg.c:3353:35: error: initialization of 'struct bfad_im_port_s *' from 'long unsigned int' makes pointer from integer without a cast [-Werror=int-conversion] struct bfad_im_port_s *im_port = shost->hostdata[0];
This changes the code back to shost_priv() once more, but encapsulates it in an inline function to document the rather unusual way of using the private data only as a pointer to the previously allocated structure.
I did not try to get rid of the extra indirection level entirely, which would have been rather invasive and required reworking the entire initialization sequence.
Fixes: 45349821ab3a ("scsi: bfa: fix access to bfad_im_port_s") Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Johannes Thumshirn jthumshirn@suse.de Reviewed-by: Hannes Reinecke hare@suse.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Cc: Sasha Levin Alexander.Levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/scsi/bfa/bfad_bsg.c | 4 ++-- drivers/scsi/bfa/bfad_im.c | 6 ++++-- drivers/scsi/bfa/bfad_im.h | 10 ++++++++++ 3 files changed, 16 insertions(+), 4 deletions(-)
--- a/drivers/scsi/bfa/bfad_bsg.c +++ b/drivers/scsi/bfa/bfad_bsg.c @@ -3136,7 +3136,7 @@ bfad_im_bsg_vendor_request(struct bsg_jo struct fc_bsg_reply *bsg_reply = job->reply; uint32_t vendor_cmd = bsg_request->rqst_data.h_vendor.vendor_cmd[0]; struct Scsi_Host *shost = fc_bsg_to_shost(job); - struct bfad_im_port_s *im_port = shost->hostdata[0]; + struct bfad_im_port_s *im_port = bfad_get_im_port(shost); struct bfad_s *bfad = im_port->bfad; struct request_queue *request_q = job->req->q; void *payload_kbuf; @@ -3359,7 +3359,7 @@ bfad_im_bsg_els_ct_request(struct bsg_jo { struct bfa_bsg_data *bsg_data; struct Scsi_Host *shost = fc_bsg_to_shost(job); - struct bfad_im_port_s *im_port = shost->hostdata[0]; + struct bfad_im_port_s *im_port = bfad_get_im_port(shost); struct bfad_s *bfad = im_port->bfad; bfa_bsg_fcpt_t *bsg_fcpt; struct bfad_fcxp *drv_fcxp; --- a/drivers/scsi/bfa/bfad_im.c +++ b/drivers/scsi/bfa/bfad_im.c @@ -546,6 +546,7 @@ int bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port, struct device *dev) { + struct bfad_im_port_pointer *im_portp; int error = 1;
mutex_lock(&bfad_mutex); @@ -564,7 +565,8 @@ bfad_im_scsi_host_alloc(struct bfad_s *b goto out_free_idr; }
- im_port->shost->hostdata[0] = (unsigned long)im_port; + im_portp = shost_priv(im_port->shost); + im_portp->p = im_port; im_port->shost->unique_id = im_port->idr_id; im_port->shost->this_id = -1; im_port->shost->max_id = MAX_FCP_TARGET; @@ -748,7 +750,7 @@ bfad_scsi_host_alloc(struct bfad_im_port
sht->sg_tablesize = bfad->cfg_data.io_max_sge;
- return scsi_host_alloc(sht, sizeof(unsigned long)); + return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer)); }
void --- a/drivers/scsi/bfa/bfad_im.h +++ b/drivers/scsi/bfa/bfad_im.h @@ -69,6 +69,16 @@ struct bfad_im_port_s { struct fc_vport *fc_vport; };
+struct bfad_im_port_pointer { + struct bfad_im_port_s *p; +}; + +static inline struct bfad_im_port_s *bfad_get_im_port(struct Scsi_Host *host) +{ + struct bfad_im_port_pointer *im_portp = shost_priv(host); + return im_portp->p; +} + enum bfad_itnim_state { ITNIM_STATE_NONE, ITNIM_STATE_ONLINE,