linux-kernel - Re: [PATCH v2 02/19] scsi: libsas and users: Remove notifier indirection

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Date:   Tue, 12 Jan 2021 11:36:21 +0000
From:   John Garry <john.garry@...wei.com>
To:     "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jason Yan <yanaijie@...wei.com>,
        Daniel Wagner <dwagner@...e.de>,
        "Artur Paszkiewicz" <artur.paszkiewicz@...el.com>,
        Jack Wang <jinpu.wang@...ud.ionos.com>
CC:     <linux-scsi@...r.kernel.org>, <intel-linux-scu@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Sebastian A. Siewior" <bigeasy@...utronix.de>
Subject: Re: [PATCH v2 02/19] scsi: libsas and users: Remove notifier
 indirection

On 12/01/2021 11:06, Ahmed S. Darwish wrote:
> From: John Garry<john.garry@...wei.com>
> 
> The LLDDs report events to libsas with .notify_port_event and
> .notify_phy_event callbacks.
> 
> These callbacks are fixed and so there is no reason why we cannot call the
> functions directly, so do that.
> 
> This neatens the code slightly.
> 
> [a.darwish@...utronix.de: Remove the now unused "sas_ha" local variables]
> Signed-off-by: John Garry<john.garry@...wei.com>

Don't forget your signed-off-by :)

> ---
>   Documentation/scsi/libsas.rst          |  4 +--
>   drivers/scsi/aic94xx/aic94xx_scb.c     | 20 ++++++-------
>   drivers/scsi/hisi_sas/hisi_sas_main.c  | 12 +++-----
>   drivers/scsi/hisi_sas/hisi_sas_v1_hw.c |  3 +-
>   drivers/scsi/hisi_sas/hisi_sas_v2_hw.c |  3 +-
>   drivers/scsi/hisi_sas/hisi_sas_v3_hw.c |  3 +-
>   drivers/scsi/isci/port.c               |  7 ++---
>   drivers/scsi/libsas/sas_event.c        | 13 +++------
>   drivers/scsi/libsas/sas_init.c         |  6 ----
>   drivers/scsi/libsas/sas_internal.h     |  1 -
>   drivers/scsi/mvsas/mv_sas.c            | 14 ++++-----
>   drivers/scsi/pm8001/pm8001_hwi.c       | 40 ++++++++++++--------------
>   drivers/scsi/pm8001/pm8001_sas.c       |  7 ++---
>   drivers/scsi/pm8001/pm80xx_hwi.c       | 35 ++++++++++------------
>   include/scsi/libsas.h                  |  7 ++---
>   15 files changed, 69 insertions(+), 106 deletions(-)
> 
> diff --git a/Documentation/scsi/libsas.rst b/Documentation/scsi/libsas.rst
> index f9b77c7879db..a183b1d84713 100644
> --- a/Documentation/scsi/libsas.rst
> +++ b/Documentation/scsi/libsas.rst
> @@ -189,8 +189,8 @@ num_phys
>   The event interface::
>   
>   	/* LLDD calls these to notify the class of an event. */
> -	void (*notify_port_event)(struct sas_phy *, enum port_event);
> -	void (*notify_phy_event)(struct sas_phy *, enum phy_event);
> +	void sas_notify_port_event(struct sas_phy *, enum port_event);
> +	void sas_notify_phy_event(struct sas_phy *, enum phy_event);
>   
>   When sas_register_ha() returns, those are set and can be
>   called by the LLDD to notify the SAS layer of such events

Maybe this was missed in the rebase, but I think that this comment can 
go/be changed at some stage.

Thanks,
John