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Fri, 02 Oct 2026 01:45:31 -0700 (PDT) Date: Fri, 2 Oct 2026 10:45:28 +0200 From: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= To: Thierry Reding Cc: Jonathan Hunter , Mikko Perttunen , Philipp Zabel , linux-pwm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/3] pwm: tegra: Make use of dev_err_probe() Message-ID: References: <641219a7d76bbcd8fe98b5955f2355ed45f55986.1789741839.git.u.kleine-koenig@baylibre.com> Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="agfmvsvuk6z7tqez" Content-Disposition: inline In-Reply-To: --agfmvsvuk6z7tqez Content-Type: text/plain; protected-headers=v1; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v2 1/3] pwm: tegra: Make use of dev_err_probe() MIME-Version: 1.0 Hello Thierry, On Mon, Sep 21, 2026 at 06:14:31PM +0200, Thierry Reding wrote: > On Mon, Sep 21, 2026 at 02:46:03PM +0200, Uwe Kleine-K=F6nig wrote: > > [1] last instance was just today, where on a bananapi USB didn't work > > and /sys/kernel/debug/devices_deferred ended up containing: > >=20 > > 1c13000.usb platform: supplier 1c13400.phy not ready > > 1c1c000.usb platform: supplier 1c13400.phy not ready > > 1c14400.usb platform: supplier 1c13400.phy not ready > > 1c13400.phy platform: supplier axp20x-usb-power-supply not ready > > 1c14000.usb platform: supplier 1c13400.phy not ready > > 1c1c400.usb platform: supplier 1c13400.phy not ready > > axp20x-usb-power-supply > >=20 > > It would be so easy[2] to add a useful debugging hint here > >=20 > > [2] https://lore.kernel.org/all/b699f8251afed736af454a981630926e45eb7da= 7.1789983244.git.ukleinek@debian.org/ >=20 > I see. Yeah, I find it increasingly difficult to remember all the > context of a function call, whether it is that it prints an error > message or needs some lock to be held, sleeps or not. Sashiko has > been really good about pointing some of those things out. I guess a comment in the function docs would also already help me. And an upside is that (I hope) Sashiko would understand such a comment, too. Best regards Uwe --agfmvsvuk6z7tqez Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmq/byYACgkQj4D7WH0S /k59hQf+OU1W9ZhedzdfcGj2U3UJ1x+P1RejoQ2RuQVfrUgHvC3MSMFk7JXsrDNc LTbCJVjT8VU/Nob7KA4r+5v/UF17IVLwokxHP/bn7d8Btes8lHsvoPag6kfkWz8L I5dGcmyYxf8HrpoB03TIu49HauvAcTcm45e1Y/7+FnUpZIJlfwGUlQWCaO6JAWNn cH9sdSJQ9T7Sa40ARrWOP8j/O1KkVB7e5oQ+m6A9oCHaENvoHXbJqg1+NekVzb/E nxHUjAeKvse/DRePf+hAuBmHHO3t+jsZQgfdGSzKfGRdiITlnAU6Plldbt/Ao/MI aQpnnF06H0F/MWxjqxrMExhYMLOHiA== =Wsri -----END PGP SIGNATURE----- --agfmvsvuk6z7tqez--