From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 475FA288C8D; Mon, 7 Jul 2025 10:43:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751885015; cv=none; b=foYk78YXBAi1jMq8tBxS0bFkdKT+UqHKAnkXFzZ8250Q93abDhAPDzVEhibXQvFlQYH1LKUXZwzIqy3mW7eem9qMtQYonzPZAMr06IWmCG/wApFlQC3p8avjqKS6cF12mYAvJsHVGNZMPt5UgDl6A74g8bS97TO5TbREx6/gqN4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751885015; c=relaxed/simple; bh=ZAHncvRq/os3HYtn8J7X9/8sN0J5JEZiybhSWcC8h+8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Vol3DIqJTVxYG9CIJoPSmm6dy9s3iA4vgBO1yGjDDa0WQX/OYSk/qUSBYlP25UsfECHR/xqQp1HInq0G2TKFIDJBrKzRF1U1all5iRqOxxYY0omF9UubLNsie2EjNusmGOlYvB9bTk3Abfe5lDSwHXjzDbkoVTqp+JiQGlxMIbU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QiDoMvaM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QiDoMvaM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED05DC4CEF5; Mon, 7 Jul 2025 10:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751885014; bh=ZAHncvRq/os3HYtn8J7X9/8sN0J5JEZiybhSWcC8h+8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=QiDoMvaMaEtgtwLkbm7fWeJkr74MnR9ckIpH80fi864JSTlJW8GAN+l4MQWNo/QIr KDoX+f13espcJXebVoABhzBqq8HV+GR1+B27AMR1DUe7cOvaBti79jKPsDVm40IQKv 6wd5DeUd8v6lV9xth8qOBezBUrCPRfODIbomdLpfUmgkeIUKIx5/GUpwxVRLgVDpXt 0lJGqztvJw9fvqFYY1wZ018EOUwfoslkiwCMdpHT2lP4Mg0dAo5FsnvO/9VLI1hDBl zamXhcQZEOLlZVd7alhNqDcn8BuEzs4w1CZe3YRmg0cROX90bT4zliB2UFS/1+9nOL WLgwzoxlObrCA== Date: Mon, 7 Jul 2025 11:43:29 +0100 From: Simon Horman To: "Rob Herring (Arm)" Cc: Lorenzo Bianconi , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Felix Fietkau , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Alex Elder , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] net: Use of_reserved_mem_region_to_resource{_byname}() for "memory-region" Message-ID: <20250707104329.GF89747@horms.kernel.org> References: <20250703183459.2074381-1-robh@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250703183459.2074381-1-robh@kernel.org> On Thu, Jul 03, 2025 at 01:34:57PM -0500, Rob Herring (Arm) wrote: > Use the newly added of_reserved_mem_region_to_resource{_byname}() > functions to handle "memory-region" properties. > > The error handling is a bit different for mtk_wed_mcu_load_firmware(). > A failed match of the "memory-region-names" would skip the entry, but > then other errors in the lookup and retrieval of the address would not > skip the entry. However, that distinction is not really important. > Either the region is available and usable or it is not. So now, errors > from of_reserved_mem_region_to_resource() are ignored so the region is > simply skipped. Thanks for explaining this, it's much appreciated. > Signed-off-by: Rob Herring (Arm) > --- > drivers/net/ethernet/airoha/airoha_npu.c | 25 ++++++---------- > drivers/net/ethernet/mediatek/mtk_wed.c | 24 ++++------------ > drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 32 +++++++-------------- > drivers/net/ipa/ipa_main.c | 12 ++------ FWIIW, I would slightly prefer one patch per driver. ... > diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c > index 351dd152f4f3..73c26fcfd85e 100644 > --- a/drivers/net/ethernet/mediatek/mtk_wed.c > +++ b/drivers/net/ethernet/mediatek/mtk_wed.c > @@ -1318,26 +1318,14 @@ mtk_wed_rro_ring_alloc(struct mtk_wed_device *dev, struct mtk_wed_ring *ring, > static int > mtk_wed_rro_alloc(struct mtk_wed_device *dev) > { > - struct reserved_mem *rmem; > - struct device_node *np; > - int index; > + struct resource res; > + int ret; > > - index = of_property_match_string(dev->hw->node, "memory-region-names", > - "wo-dlm"); > - if (index < 0) > - return index; > - > - np = of_parse_phandle(dev->hw->node, "memory-region", index); > - if (!np) > - return -ENODEV; > - > - rmem = of_reserved_mem_lookup(np); > - of_node_put(np); > - > - if (!rmem) > - return -ENODEV; > + ret = of_reserved_mem_region_to_resource_byname(dev->hw->node, "wo-dlm", &res); Please consider line-wrapping the line above so it is 80 columns wide or less, as is still preferred for Networking code. > + if (ret) > + return ret; > > - dev->rro.miod_phys = rmem->base; > + dev->rro.miod_phys = res.start; > dev->rro.fdbk_phys = MTK_WED_MIOD_COUNT + dev->rro.miod_phys; > > return mtk_wed_rro_ring_alloc(dev, &dev->rro.ring, > diff --git a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c ... > @@ -319,13 +313,7 @@ mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo) > > /* load firmware region metadata */ > for (i = 0; i < ARRAY_SIZE(mem_region); i++) { > - int index = of_property_match_string(wo->hw->node, > - "memory-region-names", > - mem_region[i].name); > - if (index < 0) > - continue; > - > - ret = mtk_wed_get_memory_region(wo->hw, index, &mem_region[i]); > + ret = mtk_wed_get_memory_region(wo->hw, mem_region[i].name, &mem_region[i]); Ditto. > if (ret) > return ret; > } ...