From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f177.google.com (mail-pg1-f177.google.com [209.85.215.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F69735893 for ; Mon, 7 Sep 2026 00:49:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788742154; cv=none; b=eII9+uL0oVatvtwFythGbiRxcsf+DgOXI8cP5/bjLLnjWLBytzT00L+9Uz25fVyV65FjQCbqHvRbB+pvwA/61QZQOZ8eRal7iINyR7+8ieMQL5BQmFIJaQCi91ciBFL5DJyghUrakvcHhKs3F22A4VxhCQ1rZnS6j6m/fZVrM94= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788742154; c=relaxed/simple; bh=hlcsJhUrLyBo5++wlhrrLrw8VUbuI1LW8vlmxLrWUg8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=h3jCCeOB8FlMf6jSzTzQqOvu7kcgMFJUDEDMmU3O4QQqPhDCRci09K1eNBQbXkbRFfs0n2Soi3yZyKnb0TInpHnv4hV6mXZvDjhlNrVs9STtrhbLgRU74JWUvWpG4Iwm1dZnyNyPp36KTVMqWcoWE3zUz6Nsr7sy/l1vJ0gC9xg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=IJfgmuYR; arc=none smtp.client-ip=209.85.215.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IJfgmuYR" Received: by mail-pg1-f177.google.com with SMTP id 41be03b00d2f7-cc1cf287ef8so2598612a12.3 for ; Sun, 06 Sep 2026 17:49:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788742152; x=1789346952; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=K2XV7N8oiIfPwNA3+WEAPB+6Qv6pN5TtTgVk3F9R8Ps=; b=IJfgmuYR8XjIp9icqVQ9y6wBfS/uxsiofDOy05ckPleDa0z4WFB0hjqoyGAWH/Jnwh ej9iu3zsNFW0CUgCuPtx2ayDqoBMp/wbOQW2w9YWuhH7dLsBeslZM3QrKUOY+mAzXbTh pyioAoHDdlQSHcQFnrAIXPdhuczN4YMaTlQkMI3CTS9iKSp1Ba2oj4WMIqzqZ6L0faLi CVpwrvfCmsj88qysE3LJ31sYOU6NZ6DqndKtRYtSGqCbmQyHuoRBlwqsRWEjMrf0liJA GZCuCXb9T2NFGXz54KYuZ0M3BxnsgUHKTXocJ2Pwfi4wpcRt3cBkOPTw6b3lzZQGGRLr eKpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788742152; x=1789346952; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=K2XV7N8oiIfPwNA3+WEAPB+6Qv6pN5TtTgVk3F9R8Ps=; b=Zac7ogtPuERLz3d/afp5NxER3RDfmDPxVcmsWt+ufGUrR29bOrCVggnEN4d006whB4 TL93b/i6w96ZV39hU9JOrZgPObnRoVxWdC8dY1XvcjU63CCTLDgBYs3/UKiFMu4Qdlps 8eNtE0KZA/6Crht2SW/f65ySihVWYgAO8vD+jlM7b+yIVuEnmixw87S9qzi5fJyJeJYD g9udO5q+TqtgUFuAPxVJ9jlRJCtMDwOwqF63S4fnzyXUdPBslQkMP6Kv+JIS/1OvYrEw 9wLJJajo1BQS5HT85Iz4tyARaGvayo8NIHaI91FrScuvT0gca0E+0ZW+QqFmsbPJqKeP 3arQ== X-Forwarded-Encrypted: i=1; AKwUvBy5xkrpCb+uzeUXsFEEShGJ/9sXaNePcP9tH7yA+lcx4DcrpFp+6HBqkKNqTOrBgEPemyom@lists.linux.dev X-Gm-Message-State: AFuF++lU3PU69ErZmhJF1A9TxxPSskz6Gv4HpNMDL6oMbXiomT6NvwAe y+XvG20dRNJt7aIIu6krr+2almqy9X2q0GwPEUVAl2sQDiD0zSJGCpnO X-Gm-Gg: AYBFou3TnyEdAfppIunNPRq/uHxd1B7ylC+C0z2kWXGHilO9+UD4Fn9PZWIRj94BWcR C92R7aJt+ekAhjjOjXXlTvFNJPAIcPj8v/3qFO5x/XRK1CKrJfGnxPcKejqEChxMOYvg+NBDhlx ldJjgDNuV6UX+lxB83sATkVfVdlwiKOgFlsbSDnWWa6RrGIQ2RNgq4kUmALt3dfva8Ybo3Nyino ZfcStJuhU6p+CftBjJiF9rFK+UkSIDdyAdgjwhRDIh3xLVx5I0qJixhlEDgzsfgnJoYNBqgpwog kg3EV5EvHb85P0Iqd8k1ICC7791WiWnyT+jdsTu7b15X8kKaxyC2hRRwbVf3y7Nni3GguyESHoJ 0kD/9Wtl+rwuy/e3J74D2FM8j0VsXgKHUeh+NcNeW+bHniCTCKnwC4eUU0F5z2ofw05jHBGSxDU Rr7jR6AmOii/pTIr2OkJG1GvxWz0aiUDVUQEx5ArYZkc9MYgF74mS4mvRx4hXgNUQxFLhu6CPn/ 8hhUpH27RNbFEXILWjbc+ZUGEgjpAQ1ciQYtq+j5RsA2OwsfmNWZF1s1+QP1r6/NI0Vzp1l08Ky rRaXgSINQRDvGTxgU+IaxZn16SEkwuGY763iCLw= X-Received: by 2002:a05:6a21:138c:b0:3d3:afd9:6040 with SMTP id adf61e73a8af0-3da3a1f77f2mr31242218637.27.1788742152360; Sun, 06 Sep 2026 17:49:12 -0700 (PDT) Received: from ryzen.lan ([2601:644:8000:7a86::e35]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-333c9db92b1sm22771048eec.9.2026.09.06.17.49.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Sep 2026 17:49:11 -0700 (PDT) From: Rosen Penev To: linux-mtd@lists.infradead.org Cc: Robert Jarzmik , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , linux-kernel@vger.kernel.org (open list), llvm@lists.linux.dev (open list:CLANG/LLVM BUILD SUPPORT:Keyword:\b(?i:clang|llvm)\b) Subject: [PATCH] mtd: docg3: use devm_platform_ioremap_resource() Date: Sun, 6 Sep 2026 17:49:10 -0700 Message-ID: <20260907004910.226013-1-rosenp@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace the open-coded platform_get_resource(IORESOURCE_MEM, 0) plus devm_ioremap() sequence with devm_platform_ioremap_resource(), which folds the resource lookup, region reservation and mapping into one step and returns an ERR_PTR checked with IS_ERR()/PTR_ERR(). The canonical docg3 register window is DOC_IOSPACE_SIZE (0x2000), which is the size any platform provides for this device, so mapping the full resource is equivalent to the previous fixed-size devm_ioremap(). Built for ARM (multi_v7_defconfig + CONFIG_MTD_DOCG3) with LLVM=1; drivers/mtd/devices/docg3.o compiles cleanly. Assisted-by: opencode:hy3-free Signed-off-by: Rosen Penev --- drivers/mtd/devices/docg3.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 603fd0efc2ea..bbdf3bfb0e70 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1971,25 +1971,15 @@ static int __init docg3_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct mtd_info *mtd; - struct resource *ress; void __iomem *base; int ret, floor; struct docg3_cascade *cascade; - ret = -ENXIO; - ress = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!ress) { - dev_err(dev, "No I/O memory resource defined\n"); - return ret; - } + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); ret = -ENOMEM; - base = devm_ioremap(dev, ress->start, DOC_IOSPACE_SIZE); - if (!base) { - dev_err(dev, "devm_ioremap dev failed\n"); - return ret; - } - cascade = devm_kcalloc(dev, DOC_MAX_NBFLOORS, sizeof(*cascade), GFP_KERNEL); if (!cascade) -- 2.55.0