From: Tariq Toukan <ttoukan.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: David Decotigny
<ddecotig-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
David Decotigny <decot-Ypc/8FJVVoBWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH v1] mlx4: remove unused fields
Date: Thu, 29 Sep 2016 10:44:40 +0300 [thread overview]
Message-ID: <698955ce-e177-bbab-143c-9d6c112e05b8@gmail.com> (raw)
In-Reply-To: <1475085604-101493-1-git-send-email-ddecotig-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On 28/09/2016 9:00 PM, David Decotigny wrote:
> From: David Decotigny <decot-Ypc/8FJVVoBWk0Htik3J/w@public.gmane.org>
>
> This also can address following UBSAN warnings:
> [ 36.640343] ================================================================================
> [ 36.648772] UBSAN: Undefined behaviour in drivers/net/ethernet/mellanox/mlx4/fw.c:857:26
> [ 36.656853] shift exponent 64 is too large for 32-bit type 'int'
> [ 36.663348] ================================================================================
> [ 36.671783] ================================================================================
> [ 36.680213] UBSAN: Undefined behaviour in drivers/net/ethernet/mellanox/mlx4/fw.c:861:27
> [ 36.688297] shift exponent 35 is too large for 32-bit type 'int'
> [ 36.694702] ================================================================================
>
> Tested:
> reboot with UBSAN, no warning.
>
> Signed-off-by: David Decotigny <decot-Ypc/8FJVVoBWk0Htik3J/w@public.gmane.org>
> ---
> drivers/net/ethernet/mellanox/mlx4/fw.c | 4 ----
> drivers/net/ethernet/mellanox/mlx4/fw.h | 2 --
> 2 files changed, 6 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
> index 090bf81..f9cbc67 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/fw.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
> @@ -853,12 +853,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
> dev_cap->max_eqs = 1 << (field & 0xf);
> MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MTT_OFFSET);
> dev_cap->reserved_mtts = 1 << (field >> 4);
> - MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET);
> - dev_cap->max_mrw_sz = 1 << field;
> MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MRW_OFFSET);
> dev_cap->reserved_mrws = 1 << (field & 0xf);
> - MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET);
> - dev_cap->max_mtt_seg = 1 << (field & 0x3f);
> MLX4_GET(size, outbox, QUERY_DEV_CAP_NUM_SYS_EQ_OFFSET);
> dev_cap->num_sys_eqs = size & 0xfff;
> MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_REQ_QP_OFFSET);
> diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.h b/drivers/net/ethernet/mellanox/mlx4/fw.h
> index f11614f..5343a05 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/fw.h
> +++ b/drivers/net/ethernet/mellanox/mlx4/fw.h
> @@ -80,9 +80,7 @@ struct mlx4_dev_cap {
> int max_eqs;
> int num_sys_eqs;
> int reserved_mtts;
> - int max_mrw_sz;
> int reserved_mrws;
> - int max_mtt_seg;
> int max_requester_per_qp;
> int max_responder_per_qp;
> int max_rdma_global;
Reviewed-by: Tariq Toukan <tariqt-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2016-09-29 7:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-28 18:00 [PATCH v1] mlx4: remove unused fields David Decotigny
2016-09-28 18:19 ` Eric Dumazet
[not found] ` <1475085604-101493-1-git-send-email-ddecotig-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-09-29 7:44 ` Tariq Toukan [this message]
2016-09-30 5:57 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=698955ce-e177-bbab-143c-9d6c112e05b8@gmail.com \
--to=ttoukan.linux-re5jqeeqqe8avxtiumwx3w@public.gmane.org \
--cc=ddecotig-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=decot-Ypc/8FJVVoBWk0Htik3J/w@public.gmane.org \
--cc=edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).