From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7B37C41513 for ; Wed, 2 Aug 2023 22:54:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230422AbjHBWyH (ORCPT ); Wed, 2 Aug 2023 18:54:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230461AbjHBWyG (ORCPT ); Wed, 2 Aug 2023 18:54:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2C61127; Wed, 2 Aug 2023 15:54:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 408AF61B76; Wed, 2 Aug 2023 22:54:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 579A0C433C7; Wed, 2 Aug 2023 22:54:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691016843; bh=YiU0aA6053zZBxMpkzJTUPwbuvPZtBeKnaf2p7gJrCU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Yu5QJm5y8zR+pdtBL5JD45JWGYCMTAwCcZDs7Lxa2dB+oLx8+HOEyqkGXNVrtxqbq gM+Jh4P+J/c188mzyOBe85KvyQrq/Ya05rvkkRKVsurPSjzhB1Mt5BglDmGCmujESD 01AhZS5AYxCwTVf/aqRcz8+JwCPxDsTw3s5rJ341pd4oFMyKg+uwWX2/yYqav6e2Nc I/KUWCfPHRNoOPB1adF9l4mgdJUPXTRyH0UWSVqW/6P8LN99rTc2+Do5G2STJl4ZYk IsnjxdbWUw14ur8OMgPoP9NAv1NWpyyMlORuJBjahGLJO8sImwM8E12kanDseDloZx 2bDEyhpFMUROw== Date: Wed, 2 Aug 2023 23:53:59 +0100 From: Conor Dooley To: Andy Shevchenko Cc: Jisheng Zhang , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Jiri Slaby , linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] dt-bindings: serial: snps-dw-apb-uart: make interrupt optional Message-ID: <20230802-risk-getting-e6005e86be81@spud> References: <20230802150545.3742-1-jszhang@kernel.org> <20230802150545.3742-2-jszhang@kernel.org> <20230802-halogen-bungee-63273b2c456c@spud> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="TyQVymKmfkVhVy64" Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --TyQVymKmfkVhVy64 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 03, 2023 at 12:57:44AM +0300, Andy Shevchenko wrote: > On Wed, Aug 02, 2023 at 04:43:48PM +0100, Conor Dooley wrote: > > On Wed, Aug 02, 2023 at 11:05:44PM +0800, Jisheng Zhang wrote: > > > The driver fall back to poll style when there's no irq. "poll" still > > > looks better than no support. > >=20 > > What is the user for this where the interrupt is not actually wired up > > in the hardware? >=20 > FYI: kernel console doesn't use interrupts, so for example it might be > the debug port. Note, I have no idea of the Zhang's case, just my assumpt= ion. I'm less interested in what the software is doing, it's what the device=20 that has not connected the interrupt is that I am curious about. --TyQVymKmfkVhVy64 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCZMrehgAKCRB4tDGHoIJi 0pFVAQCP1wynCbszotBg7z6E5V2mul7jaRGS0Hn3LNZOBaczogD+JXolWFJnyohA 2deDAf/0fHAyq1Uzh0NT1FfEQYKGAgs= =yvLF -----END PGP SIGNATURE----- --TyQVymKmfkVhVy64--