Re: [PATCH v2 05/29] scsi: fcoe: fcoe_ctlr: Fix a myriad of documentation issues

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On Tue, 14 Jul 2020, Hannes Reinecke wrote:

> On 7/13/20 9:46 AM, Lee Jones wrote:
> > Mostly missing or incorrect (bitrotted) function parameters.
> > 
> > Fixes the following W=1 kernel build warning(s):
> > 
> >   drivers/scsi/fcoe/fcoe_ctlr.c:139: warning: Function parameter or member 'mode' not described in 'fcoe_ctlr_init'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:604: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_encaps'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:1312: warning: Function parameter or member 'skb' not described in 'fcoe_ctlr_recv_clr_vlink'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:1312: warning: Excess function parameter 'fh' description in 'fcoe_ctlr_recv_clr_vlink'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:1781: warning: Function parameter or member 't' not described in 'fcoe_ctlr_timeout'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:1781: warning: Excess function parameter 'arg' description in 'fcoe_ctlr_timeout'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:1904: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_recv_flogi'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2166: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_disc_stop_locked'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2166: warning: Excess function parameter 'fip' description in 'fcoe_ctlr_disc_stop_locked'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2188: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_disc_stop'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2188: warning: Excess function parameter 'fip' description in 'fcoe_ctlr_disc_stop'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2204: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_disc_stop_final'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2204: warning: Excess function parameter 'fip' description in 'fcoe_ctlr_disc_stop_final'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2273: warning: Function parameter or member 'frport' not described in 'fcoe_ctlr_vn_parse'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2273: warning: Excess function parameter 'rdata' description in 'fcoe_ctlr_vn_parse'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2804: warning: Function parameter or member 'frport' not described in 'fcoe_ctlr_vlan_parse'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2804: warning: Excess function parameter 'rdata' description in 'fcoe_ctlr_vlan_parse'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2900: warning: Excess function parameter 'min_len' description in 'fcoe_ctlr_vlan_send'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2977: warning: Function parameter or member 'fip' not described in 'fcoe_ctlr_vlan_recv'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2977: warning: Function parameter or member 'skb' not described in 'fcoe_ctlr_vlan_recv'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2977: warning: Excess function parameter 'lport' description in 'fcoe_ctlr_vlan_recv'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:2977: warning: Excess function parameter 'fp' description in 'fcoe_ctlr_vlan_recv'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:3033: warning: Function parameter or member 'callback' not described in 'fcoe_ctlr_disc_start'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:3033: warning: Function parameter or member 'lport' not described in 'fcoe_ctlr_disc_start'
> >   drivers/scsi/fcoe/fcoe_ctlr.c:3033: warning: Excess function parameter 'fip' description in 'fcoe_ctlr_disc_start'
> > 
> > Cc: Hannes Reinecke <hare@xxxxxxx>
> > Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> > ---
> >   drivers/scsi/fcoe/fcoe_ctlr.c | 26 +++++++++++++-------------
> >   1 file changed, 13 insertions(+), 13 deletions(-)
> > 
> > diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
> > index 1791a393795da..99242f9856708 100644
> > --- a/drivers/scsi/fcoe/fcoe_ctlr.c
> > +++ b/drivers/scsi/fcoe/fcoe_ctlr.c
> > @@ -134,6 +134,7 @@ static void fcoe_ctlr_map_dest(struct fcoe_ctlr *fip)
> >   /**
> >    * fcoe_ctlr_init() - Initialize the FCoE Controller instance
> >    * @fip: The FCoE controller to initialize
> > + * @mode: FIP mode to set
> >    */
> >   void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_mode mode)
> >   {
> > @@ -587,6 +588,7 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
> >   /**
> >    * fcoe_ctlr_encaps() - Encapsulate an ELS frame for FIP, without sending it
> >    * @fip:   The FCoE controller for the ELS frame
> > + * @lport: The local port
> >    * @dtype: The FIP descriptor type for the frame
> >    * @skb:   The FCoE ELS frame including FC header but no FCoE headers
> >    * @d_id:  The destination port ID.
> > @@ -1302,7 +1304,7 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
> >   /**
> >    * fcoe_ctlr_recv_els() - Handle an incoming link reset frame
> >    * @fip: The FCoE controller that received the frame
> > - * @fh:	 The received FIP header
> > + * @skb: The received FIP packet
> >    *
> >    * There may be multiple VN_Port descriptors.
> >    * The overall length has already been checked.
> > @@ -1775,7 +1777,7 @@ static void fcoe_ctlr_flogi_send(struct fcoe_ctlr *fip)
> >   /**
> >    * fcoe_ctlr_timeout() - FIP timeout handler
> > - * @arg: The FCoE controller that timed out
> > + * @t: Timer context use to obtain the controller reference
> >    */
> >   static void fcoe_ctlr_timeout(struct timer_list *t)
> >   {
> > @@ -1887,6 +1889,7 @@ static void fcoe_ctlr_recv_work(struct work_struct *recv_work)
> >   /**
> >    * fcoe_ctlr_recv_flogi() - Snoop pre-FIP receipt of FLOGI response
> >    * @fip: The FCoE controller
> > + * @lport: The local port
> >    * @fp:	 The FC frame to snoop
> >    *
> >    * Snoop potential response to FLOGI or even incoming FLOGI.
> > @@ -2158,7 +2161,7 @@ static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = {
> >   /**
> >    * fcoe_ctlr_disc_stop_locked() - stop discovery in VN2VN mode
> > - * @fip: The FCoE controller
> > + * @lport: The local port
> >    *
> >    * Called with ctlr_mutex held.
> >    */
> > @@ -2179,7 +2182,7 @@ static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
> >   /**
> >    * fcoe_ctlr_disc_stop() - stop discovery in VN2VN mode
> > - * @fip: The FCoE controller
> > + * @lport: The local port
> >    *
> >    * Called through the local port template for discovery.
> >    * Called without the ctlr_mutex held.
> > @@ -2195,7 +2198,7 @@ static void fcoe_ctlr_disc_stop(struct fc_lport *lport)
> >   /**
> >    * fcoe_ctlr_disc_stop_final() - stop discovery for shutdown in VN2VN mode
> > - * @fip: The FCoE controller
> > + * @lport: The local port
> >    *
> >    * Called through the local port template for discovery.
> >    * Called without the ctlr_mutex held.
> > @@ -2262,7 +2265,7 @@ static void fcoe_ctlr_vn_start(struct fcoe_ctlr *fip)
> >    * fcoe_ctlr_vn_parse - parse probe request or response
> >    * @fip: The FCoE controller
> >    * @skb: incoming packet
> > - * @rdata: buffer for resulting parsed VN entry plus fcoe_rport
> > + * @frport: parsed FCoE rport from the probe request
> >    *
> >    * Returns non-zero error number on error.
> >    * Does not consume the packet.
> > @@ -2793,7 +2796,7 @@ static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
> >    * fcoe_ctlr_vlan_parse - parse vlan discovery request or response
> >    * @fip: The FCoE controller
> >    * @skb: incoming packet
> > - * @rdata: buffer for resulting parsed VLAN entry plus fcoe_rport
> > + * @frport: parsed FCoE rport from the probe request
> >    *
> >    * Returns non-zero error number on error.
> >    * Does not consume the packet.
> > @@ -2892,7 +2895,6 @@ static int fcoe_ctlr_vlan_parse(struct fcoe_ctlr *fip,
> >    * @fip: The FCoE controller
> >    * @sub: sub-opcode for vlan notification or vn2vn vlan notification
> >    * @dest: The destination Ethernet MAC address
> > - * @min_len: minimum size of the Ethernet payload to be sent
> >    */
> >   static void fcoe_ctlr_vlan_send(struct fcoe_ctlr *fip,
> >   			      enum fip_vlan_subcode sub,
> > @@ -2969,9 +2971,8 @@ static void fcoe_ctlr_vlan_disc_reply(struct fcoe_ctlr *fip,
> >   /**
> >    * fcoe_ctlr_vlan_recv - vlan request receive handler for VN2VN mode.
> > - * @lport: The local port
> > - * @fp: The received frame
> > - *
> > + * @fip: The FCoE controller
> > + * @skb: The received FIP packet
> >    */
> >   static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
> >   {
> > @@ -3015,9 +3016,8 @@ static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
> >   	fc_frame_free(fp);
> >   }
> > -/**
> > +/*
> >    * fcoe_ctlr_disc_recv - start discovery for VN2VN mode.
> > - * @fip: The FCoE controller
> >    *
> >    * This sets a flag indicating that remote ports should be created
> >    * and started for the peers we discover.  We use the disc_callback
> > 
> Please, this should continue to be a kernel-doc comment; my copy still has
> this header:
> 
> /**
>  * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.
>  * @lport: The local port
>  * @fp: The received frame
>  *
> 
> What happened to it?

Look at the function below it (in your local copy). ;)

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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