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Date:   Wed, 22 Nov 2023 11:43:25 +0100
From:   =?UTF-8?B?S8O2cnk=?= Maincent <kory.maincent@bootlin.com>
To:     Jakub Kicinski <kuba@kernel.org>
Cc:     Luis Chamberlain <mcgrof@kernel.org>,
        Russ Weight <russ.weight@linux.dev>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        linux-kernel@vger.kernel.org, Conor Dooley <conor@kernel.org>,
        Andrew Lunn <andrew@lunn.ch>, netdev@vger.kernel.org
Subject: Re: [PATCH net-next v2] firmware_loader: Expand Firmware upload
 error codes with firmware invalid error
Message-ID: <20231122114325.5bacca5a@kmaincent-XPS-13-7390>
In-Reply-To: <20231121173022.3cb2fcad@kernel.org>
References: <20231121-feature_firmware_error_code-v2-1-f879a7734a4e@bootlin.com>
        <20231121173022.3cb2fcad@kernel.org>
Organization: bootlin
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On Tue, 21 Nov 2023 17:30:22 -0800
Jakub Kicinski <kuba@kernel.org> wrote:

> On Tue, 21 Nov 2023 11:50:35 +0100 Kory Maincent wrote:
> > No error code are available to signal an invalid firmware content.
> > Drivers that can check the firmware content validity can not return this
> > specific failure to the user-space
> >=20
> > Expand the firmware error code with an additional code:
> > - "firmware invalid" code which can be used when the provided firmware
> >   is invalid =20
>=20
> Any idea what this is?
>=20
> lib/test_firmware.o: warning: objtool: test_fw_upload_prepare() falls thr=
ough
> to next function __cfi_test_fw_upload_cancel()
>=20
> My build shows this on an incremental clang 17 build.

For my curiosity, how do you get this error?

Enabling test_firmware and building with W=3D1 does not show the error.
=20
Regards,
--=20
K=C3=B6ry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com