linux-can.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Vincent Mailhol <mailhol@kernel.org>
To: Marc Kleine-Budde <mkl@pengutronix.de>,
	 Oliver Hartkopp <socketcan@hartkopp.net>
Cc: "Vincent Mailhol" <mailhol@kernel.org>,
	"Stéphane Grosjean" <stephane.grosjean@hms-networks.com>,
	"Robert Nawrath" <mbro1689@gmail.com>,
	"Minh Le" <minh.le.aj@renesas.com>,
	"Duy Nguyen" <duy.nguyen.rh@renesas.com>,
	linux-can@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 08/20] can: netlink: remove useless check in can_tdc_changelink()
Date: Tue, 23 Sep 2025 14:39:43 +0900	[thread overview]
Message-ID: <20250923-canxl-netlink-prep-v3-8-87a7684333f3@kernel.org> (raw)
In-Reply-To: <20250923-canxl-netlink-prep-v3-0-87a7684333f3@kernel.org>

can_tdc_changelink() return -EOPNOTSUPP under this condition:

  !tdc_const || !can_fd_tdc_is_enabled(priv)

But this function is only called if the data[IFLA_CAN_TDC] parameters
are provided. At this point, can_validate_tdc() already checked that
either of the tdc auto or tdc manual control modes were provided, that
is to say, can_fd_tdc_is_enabled(priv) must be true.

Because the right hand operand of this condition is always true,
remove it.

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
---
 drivers/net/can/dev/netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/dev/netlink.c b/drivers/net/can/dev/netlink.c
index c212c7ff26cd3367d2014db99de7534077a1a841..17ed52d238e3a17e946116a94c7c5f503e184c3d 100644
--- a/drivers/net/can/dev/netlink.c
+++ b/drivers/net/can/dev/netlink.c
@@ -180,7 +180,7 @@ static int can_tdc_changelink(struct can_priv *priv, const struct nlattr *nla,
 	const struct can_tdc_const *tdc_const = priv->fd.tdc_const;
 	int err;
 
-	if (!tdc_const || !can_fd_tdc_is_enabled(priv))
+	if (!tdc_const)
 		return -EOPNOTSUPP;
 
 	err = nla_parse_nested(tb_tdc, IFLA_CAN_TDC_MAX, nla,

-- 
2.49.1


  parent reply	other threads:[~2025-09-23  5:40 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-23  5:39 [PATCH v3 00/20] can: netlink: preparation before introduction of CAN XL step 3/3 Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 01/20] can: dev: move struct data_bittiming_params to linux/can/bittiming.h Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 02/20] can: dev: make can_get_relative_tdco() FD agnostic and move it to bittiming.h Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 03/20] can: netlink: document which symbols are FD specific Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 04/20] can: netlink: refactor can_validate_bittiming() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 05/20] can: netlink: add can_validate_tdc() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 06/20] can: netlink: add can_validate_databittiming() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 07/20] can: netlink: refactor CAN_CTRLMODE_TDC_{AUTO,MANUAL} flag reset logic Vincent Mailhol
2025-09-23  5:39 ` Vincent Mailhol [this message]
2025-09-23  5:39 ` [PATCH v3 09/20] can: netlink: make can_tdc_changelink() FD agnostic Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 10/20] can: netlink: add can_dtb_changelink() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 11/20] can: netlink: add can_ctrlmode_changelink() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 12/20] can: netlink: make can_tdc_get_size() FD agnostic Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 13/20] can: netlink: add can_data_bittiming_get_size() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 14/20] can: netlink: add can_bittiming_fill_info() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 15/20] can: netlink: add can_bittiming_const_fill_info() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 16/20] can: netlink: add can_bitrate_const_fill_info() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 17/20] can: netlink: make can_tdc_fill_info() FD agnostic Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 18/20] can: calc_bittiming: make can_calc_tdco() " Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 19/20] can: dev: add can_get_ctrlmode_str() Vincent Mailhol
2025-09-23  5:39 ` [PATCH v3 20/20] can: netlink: add userland error messages Vincent Mailhol
2025-09-23  6:02 ` [PATCH v3 00/20] can: netlink: preparation before introduction of CAN XL step 3/3 Vincent Mailhol
2025-09-23 17:08   ` Konstantin Ryabitsev
2025-09-23 17:54     ` Vincent Mailhol

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=20250923-canxl-netlink-prep-v3-8-87a7684333f3@kernel.org \
    --to=mailhol@kernel.org \
    --cc=duy.nguyen.rh@renesas.com \
    --cc=linux-can@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mbro1689@gmail.com \
    --cc=minh.le.aj@renesas.com \
    --cc=mkl@pengutronix.de \
    --cc=socketcan@hartkopp.net \
    --cc=stephane.grosjean@hms-networks.com \
    /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).