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 C0618C001B0 for ; Fri, 11 Aug 2023 09:35:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235012AbjHKJfL (ORCPT ); Fri, 11 Aug 2023 05:35:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230478AbjHKJfH (ORCPT ); Fri, 11 Aug 2023 05:35:07 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0210126BC; Fri, 11 Aug 2023 02:35:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691746507; x=1723282507; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=30FA1fvKG5fhZ6OZRVeFBPQmbmKp7z1629d+RxTdjE8=; b=CXI8dxjSm3KZggL8O3drWaQ+nZ0twgrcMsN16yC+cEfsQom56giMluiH maKp3Pw0vHre76/hniiEG2d6E3iWQktXOzyAZMbB55AFLsfbiM/LaaaNX bT/kX0X1dXjEFrxLHfBaXuzKApcOzC8TWTmVYamH5EjH5T6dfWQhuPq32 VUiMWnldUZGdbV9rQUB+xbFnkeJhtfT/g24b4SZHqy0mIPVXlJYPsU34F Vioq2mFL183mJ59PDIxZlJwrtxSm10UYP7B7w8qR275OqE9CTJYCjh/+Y AEM+Je8j1diLZt58edJsKLOlVLVJNujgmHHDeLhrZ0QfiLyKZ5qT7Aln5 A==; X-IronPort-AV: E=McAfee;i="6600,9927,10798"; a="458012637" X-IronPort-AV: E=Sophos;i="6.01,165,1684825200"; d="scan'208";a="458012637" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Aug 2023 02:35:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10798"; a="979183085" X-IronPort-AV: E=Sophos;i="6.01,165,1684825200"; d="scan'208";a="979183085" Received: from smile.fi.intel.com ([10.237.72.54]) by fmsmga006.fm.intel.com with ESMTP; 11 Aug 2023 02:35:03 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.96) (envelope-from ) id 1qUOXt-008lwF-1P; Fri, 11 Aug 2023 12:35:01 +0300 Date: Fri, 11 Aug 2023 12:35:01 +0300 From: Andy Shevchenko To: Tony Lindgren Cc: Greg Kroah-Hartman , Jiri Slaby , Dhruva Gole , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , John Ogness , Johan Hovold , Sebastian Andrzej Siewior , Vignesh Raghavendra , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Guenter Roeck Subject: Re: [PATCH] serial: core: Fix serial core port id, including multiport devices Message-ID: References: <20230810065737.47294-1-tony@atomide.com> <20230811051121.GL11676@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230811051121.GL11676@atomide.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 11, 2023 at 08:11:21AM +0300, Tony Lindgren wrote: > * Andy Shevchenko [230810 15:26]: > > On Thu, Aug 10, 2023 at 06:24:13PM +0300, Andy Shevchenko wrote: > > > On Thu, Aug 10, 2023 at 09:57:34AM +0300, Tony Lindgren wrote: ... > > > > + unsigned int min = 0, max = ~0U; > > > > > > Shouldn't this be int? The max IIRC will be INT_MAX with this anyway. > > > > Ah, and then you can supply is as 0 (IIRC). > > The returned id will be INT_MAX, but idr.h uses unsigned int: > > int ida_alloc_range(struct ida *, unsigned int min, unsigned int max, gfp_t); > > If there's some reason to limit max id we can do it, otherwise it's just > a don't care flag. > > Please clarify if I'm not following what you are suggesting :) ... max = 0; Will have the same effect with more explicit intention "use whatever maximum is default". With ~0U I would expect to see something bigger than INT_MAX, but it won't ever appear. -- With Best Regards, Andy Shevchenko