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Date:   Mon, 30 Oct 2023 12:39:13 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Oliver Hartkopp <socketcan@hartkopp.net>
Cc:     stable@vger.kernel.org, sashal@kernel.org,
        linux-can@vger.kernel.org, lukas.magel@posteo.net,
        patches@lists.linux.dev, maxime.jayat@mobile-devices.fr,
        mkl@pengutronix.de, michal.sojka@cvut.cz
Subject: Re: [PATCH] can: isotp: upgrade 5.10 LTS to latest 6.6 mainline code
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Message-ID: <2023103002-squiggly-handrail-09ba@gregkh>
References: <20231030113027.3387-1-socketcan@hartkopp.net>
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On Mon, Oct 30, 2023 at 12:30:27PM +0100, Oliver Hartkopp wrote:
> The backport of commit 9c5df2f14ee3 ("can: isotp: isotp_ops: fix poll() to
> not report false EPOLLOUT events") introduced a new regression where the
> fix could potentially introduce new side effects.
> 
> To reduce the risk of other unmet dependencies and missing fixes and checks
> the latest mainline code base is ported back to the 5.10 LTS tree.
> 
> To meet the former Linux 5.10 API these commits have been reverted:
> e3ae2365efc1 ("net: sock: introduce sk_error_report")
> f4b41f062c42 ("net: remove noblock parameter from skb_recv_datagram()")
> 96a7457a14d9 ("can: skb: unify skb CAN frame identification helpers")
> dc97391e6610 ("sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)")
> 0145462fc802 ("can: isotp: isotp_recvmsg(): use sock_recv_cmsgs() to get SOCK_RXQ_OVFL infos")
> 
> New features and communication stability measures:
> 9f39d36530e5 ("can: isotp: add support for transmission without flow control")
> 96d1c81e6a04 ("can: isotp: add module parameter for maximum pdu size")
> 4b7fe92c0690 ("can: isotp: add local echo tx processing for consecutive frames")
> 530e0d46c613 ("can: isotp: set default value for N_As to 50 micro seconds")
> 
> And various sanity checks, fixes and improved return values.
> 
> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
> ---
>  include/uapi/linux/can/isotp.h |  25 +-
>  net/can/isotp.c                | 495 ++++++++++++++++++++++-----------
>  2 files changed, 347 insertions(+), 173 deletions(-)

Same here, sorry, we need the individual commits.

greg k-h