From patchwork Mon Mar 17 13:53:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= X-Patchwork-Id: 14019499 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9EBF2C28B30 for ; Mon, 17 Mar 2025 14:08:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=vW45Eevfr0UBpOE/gxMFRs6QWIzi9YcGFWpOxweiOQ0=; b=y37x9pvVaTOkP0u8w8E1tTpqPi AM80epouzHEmlDLm9P++VdSxHShes+mhUA2aWsqvs/Q98cdNUrSbD8uzXFd6PMZeqE5rifsmD1OPZ 4p4uLV2kFgQS9T42neCB1sj8qQNbLqxd42pi0wjw9DZzgEwKXIxQ/9MnpXWaSJlVBFRyi/p/mrUu8 IO81l9vYUqXzTc5dttDn0crj/bUJZ17T8bzsW6IG+Gfo30R6rcrp9cVZQCmH2a2Nd7zOuzx2GcZlF /8bdEQQ03JH+1Dekmsn1DwyybZtrJLb2fijrOCGeygLmbfzyK2HEmUWeQTYLmEzJM49qIym/2OaEh 6d3Jh3vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tuB8t-00000002rK0-38sE; Mon, 17 Mar 2025 14:08:35 +0000 Received: from fw2.prolan.hu ([193.68.50.107]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tuAug-00000002oeD-1Yo1 for linux-arm-kernel@lists.infradead.org; Mon, 17 Mar 2025 13:53:56 +0000 Received: from proxmox-mailgw.intranet.prolan.hu (localhost.localdomain [127.0.0.1]) by proxmox-mailgw.intranet.prolan.hu (Proxmox) with ESMTP id 7735FA02E3; Mon, 17 Mar 2025 14:53:50 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prolan.hu; h=cc :cc:content-transfer-encoding:content-type:content-type:date :from:from:message-id:mime-version:reply-to:subject:subject:to :to; s=mail; bh=vW45Eevfr0UBpOE/gxMFRs6QWIzi9YcGFWpOxweiOQ0=; b= Tr2NgHJAnGKpz9P0iyFjnrROvAJyRjVeWKR9vlIQaJKhiPEFUrelC8+I9yzOoiGI 3Ws2+hWl9K58e4Rg1v0W/PxXLJQ4NxVI6T7iP1ek+TTudAWc1c4pGnmt3ARadCOE v9chae1nxG56/rAMnKAGsDiVjgcChUT22/q0vPkH1Pms+zucbNJdmr8pYa8hskzN 2ha3KNPcn4z8W5WRGrQ0Shg7hA+ZqtcsFCZNi6kEERIjwghckmKubPIe5qkzCONF R+ysD4VmglioFko0tF5aRtYqtnyUUC12lq4JON/M4Rvl6fx7+YwOlUSG3A7KsHm4 x3x7RbXYAo7+BZ/uOB2u2CZPPwemSKGhvYmjBkrbCIOa2xqM9CmS90JcjRSl6Zab aEnPdts8ERakkAqylGyHE6NYrXquACPMd8I5KydCDh5GBFA6YfAIiUFiPdmnuRze aDnv1KPQFqtywWzrWbNT10/mzAfTwJemyb1+GEYLQi4avksOR/nJnoBdzfBDI3/h 84qbOMe6Vn0sTV/vSTQcreA2Q1wEL9LtmDN2LfpQj0UtCiih5hSdk+99UTBYju/g QURzWniqfeGv3b5YfMgPbIVhymPQULQOhhvQjkkHmkdNEluZ2pLW40Dv76vcOXey lkCmzigsGLKv1JEhTln3bmMHKu9cSnYmX+OsfbWSErY= From: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= To: CC: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= , Mark Brown , Vinod Koul , "Rafael J . Wysocki" , Len Brown , Pavel Machek , Greg Kroah-Hartman , "Nicolas Ferre" , Alexandre Belloni , Claudiu Beznea , Tudor Ambarus , Varshini Rajendran , Alexander Dahl , , , , , Subject: [PATCH v4 0/2] Add `devm_dma_request_chan()` to simplify probe path in atmel-quadspi.c Date: Mon, 17 Mar 2025 14:53:36 +0100 Message-ID: <20250317135340.382532-1-csokas.bence@prolan.hu> X-Mailer: git-send-email 2.48.1 MIME-Version: 1.0 X-ESET-AS: R=OK;S=0;OP=CALC;TIME=1742219629;VERSION=7985;MC=71617524;ID=155895;TRN=0;CRV=0;IPC=;SP=0;SIPS=0;PI=3;F=0 X-ESET-Antispam: OK X-EsetResult: clean, is OK X-EsetId: 37303A29ACD948526D7460 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250317_065354_873493_1A17F13F X-CRM114-Status: UNSURE ( 8.14 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The probe function of the atmel-quadspi driver got quite convoluted, especially since the addition of SAMA7G5 support, that was forward-ported from an older vendor kernel. To alleivate this - and similar problems in the future - an effort was made to migrate as many functions as possible, to their devm_ managed counterparts. Patch 1 adds the new `devm_dma_request_chan()` function. Patch 2 then uses this APIs to simplify the probe() function. Change in v4: * split PM imbalance fix [1] and DMA cleanup [this series] This series is to be applied after the PM imbalance fix [1]. [1] https://lore.kernel.org/linux-kernel/20250317093445.361821-1-csokas.bence@prolan.hu/ Links to previous versions: pre-series: https://lore.kernel.org/linux-kernel/20241222141427.819222-1-csokas.bence@prolan.hu/ https://lore.kernel.org/linux-kernel/20250114222851.1023194-1-csokas.bence@prolan.hu/ v1: https://lore.kernel.org/linux-kernel/20250115160244.1102881-1-csokas.bence@prolan.hu/ v2: https://lore.kernel.org/linux-kernel/20250124085221.766303-8-csokas.bence@prolan.hu/ v3: https://lore.kernel.org/linux-kernel/20250207124802.165408-1-csokas.bence@prolan.hu/ Bence Csókás (2): dma: Add devm_dma_request_chan() spi: atmel-quadspi: Use `devm_dma_request_chan()` drivers/dma/dmaengine.c | 30 +++++++++++++++++++++++++ drivers/spi/atmel-quadspi.c | 44 ++++++++++--------------------------- include/linux/dmaengine.h | 7 ++++++ 3 files changed, 48 insertions(+), 33 deletions(-)