linux-kernel - Re: [PATCH] linux/types.h: Restore the ability to disable sparse endianness checks

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Message-ID: <1508175390.2493.24.camel@wdc.com>
Date:   Mon, 16 Oct 2017 17:36:31 +0000
From:   Bart Van Assche <Bart.VanAssche@....com>
To:     "mst@...hat.com" <mst@...hat.com>
CC:     "hch@....de" <hch@....de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jejb@...ux.vnet.ibm.com" <jejb@...ux.vnet.ibm.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "qla2xxx-upstream@...gic.com" <qla2xxx-upstream@...gic.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] linux/types.h: Restore the ability to disable sparse
 endianness checks

On Mon, 2017-10-16 at 19:50 +0300, Michael S. Tsirkin wrote:
> Right but qla_nvme also triggers these warnings. That's the problem with
> disabling them tree-wide. To me it looks like the time we are spending
> arguing about work-arounds would be better spent just fixing the
> majority of the code. If a couple of places aren't clean and
> need more thought, that's not a big deal.

Making the drivers that are not endianness clean mostly clean is risky. Such
changes would most likely be done by someone who is not the driver author.
Anyone who tries to fix endianness annotations without having a firmware
manual available risks to introduce incorrect endianness annotations. Such
annotations can make code more confusing instead of less.

Bart.