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[scsi-qedf] question about parameter ordering

From "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Newsgroups linux.kernel
Subject [scsi-qedf] question about parameter ordering
Date 2017-05-03 20:00 +0200
Message-ID <tD6Jc-a7-13@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Hello everybody,

While looking into Coverity ID 1402011 I ran into the following piece  
of code at drivers/scsi/qedf/qedf_io.c:2057:

/* Fill FC header */
fc_hdr = &(tm_req->req_fc_hdr);
sid = fcport->sid;
did = fcport->rdata->ids.port_id;
__fc_fill_fc_hdr(fc_hdr, FC_RCTL_DD_UNSOL_CMD, sid, did,
                    FC_TYPE_FCP, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
                    FC_FC_SEQ_INIT, 0);

The issue here is that the position of arguments in the call to  
__fc_fill_fc_hdr() function do not match the ordering of the parameters:

_sid_ is passed to _did_
_did_ is passed to _sid_

this is the function prototype:

static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
                                     enum fc_rctl r_ctl,
                                     u32 did, u32 sid, enum fc_fh_type type,
                                     u32 f_ctl, u32 parm_offset)

My question here is if this is intentional?

In case it is not, I will send a patch to fix it. But first it would  
be great to hear any comment about it.

By the way... the same is happening at drivers/scsi/qedf/qedf_els.c:109

Thank you
--
Gustavo A. R. Silva

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[scsi-qedf] question about parameter ordering "Gustavo A. R. Silva" <garsilva@embeddedor.com> - 2017-05-03 20:00 +0200
  Re: [scsi-qedf] question about parameter ordering Randy Dunlap <rdunlap@infradead.org> - 2017-05-03 20:40 +0200
  Re: [scsi-qedf] question about parameter ordering "Gustavo A. R. Silva" <garsilva@embeddedor.com> - 2017-05-03 21:30 +0200

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