linux-kernel - Re: [PATCH] lightnvm: remove minor version check for 2.0

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Message-ID: <7B08AEC1-90F8-4AE0-AE46-BADF8CC8D270@cnexlabs.com>
Date:   Fri, 3 Aug 2018 12:07:30 +0000
From:   Javier Gonzalez <javier@...xlabs.com>
To:     Matias Bjørling <mb@...htnvm.io>
CC:     "Konopko, Igor J" <igor.j.konopko@...el.com>,
        "marcin.dziegielewski@...el.com" <marcin.dziegielewski@...el.com>,
        Hans Holmberg <hans.holmberg@...xlabs.com>,
        Heiner Litz <hlitz@...c.edu>,
        Young Tack Tack Jin <youngtack.jin@...cuitblvd.com>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] lightnvm: remove minor version check for 2.0

> On 3 Aug 2018, at 11.02, Matias Bjørling <mb@...htnvm.io> wrote:
> 
> A minor version number increase should not break backwards
> compatibility.
> 
> Fixes: 3cb98f84d368b ("lightnvm: add minor version to generic geometry")
> Signed-off-by: Matias Bjørling <mb@...htnvm.io>
> ---
> drivers/nvme/host/lightnvm.c | 6 ------
> 1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
> index d9e4cccd5b66..a156fe3ca7d3 100644
> --- a/drivers/nvme/host/lightnvm.c
> +++ b/drivers/nvme/host/lightnvm.c
> @@ -414,12 +414,6 @@ static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
> 	/* Set compacted version for upper layers */
> 	geo->version = NVM_OCSSD_SPEC_20;
> 
> -	if (!(geo->major_ver_id == 2 && geo->minor_ver_id == 0)) {
> -		pr_err("nvm: OCSSD version not supported (v%d.%d)\n",
> -				geo->major_ver_id, geo->minor_ver_id);
> -		return -EINVAL;
> -	}
> -
> 	geo->num_ch = le16_to_cpu(id->num_grp);
> 	geo->num_lun = le16_to_cpu(id->num_pu);
> 	geo->all_luns = geo->num_ch * geo->num_lun;
> --
> 2.11.0

Looks good to me.

Reviewed-by: Javier González <javier@...xlabs.com>


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