linux-kernel - Re: [PATCH 2/2] block: sed-opal: fix sparse warning: convert _

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Date:   Thu, 3 Oct 2019 11:40:53 -0400
From:   Scott Bauer <sbauer@...donthack.me>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, axboe <axboe@...nel.dk>,
        Scott Bauer <sbauer@...donthack.me>,
        jonathan.derrick@...el.com, revanth.rajashekar@...el.com
Subject: Re: [PATCH 2/2] block: sed-opal: fix sparse warning: convert __be64
 data

On Wed, Oct 02, 2019 at 07:23:15PM -0700, Randy Dunlap wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
> 
> sparse warns about incorrect type when using __be64 data.
> It is not being converted to CPU-endian but it should be.
> 
> Fixes these sparse warnings:
> 
> ../block/sed-opal.c:375:20: warning: incorrect type in assignment (different base types)
> ../block/sed-opal.c:375:20:    expected unsigned long long [usertype] align
> ../block/sed-opal.c:375:20:    got restricted __be64 const [usertype] alignment_granularity
> ../block/sed-opal.c:376:25: warning: incorrect type in assignment (different base types)
> ../block/sed-opal.c:376:25:    expected unsigned long long [usertype] lowest_lba
> ../block/sed-opal.c:376:25:    got restricted __be64 const [usertype] lowest_aligned_lba
> 
> Fixes: 455a7b238cd6 ("block: Add Sed-opal library")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Scott Bauer <scott.bauer@...el.com>
> Cc: Rafael Antognolli <rafael.antognolli@...el.com>
> Cc: Jens Axboe <axboe@...nel.dk>
> Cc: linux-block@...r.kernel.org

+ Jon and Revanth,


These look fine. They're currently unused, but may be useful in the future for sysfs or what ever else we add in.