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 341C328469A; Mon, 5 May 2025 23:16:54 +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=1746487015; cv=none; b=OVypa9YT5b60c9ja0n02ech0NixkrJ/uqJJl8LxUt+h8SQl3MdAfZsWY8hYRMH6Vvku6rMJ3kzx1o7zHHDwaHk4+TXZrYOo1NM3V7Xg8f+Or1Ed/1ZMi0FTVbOAODGbJaCwofYkQry1NLGBrsvvy3pIUUl1UyIureQvDQLjLk8U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746487015; c=relaxed/simple; bh=TBiToOS22xXZR/yDLGAa0T27o9hnSJUf3WOeI4oWn+I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=ABMDNC3VuTodpIWWcTeJmT+XS10gxzHLJpSQL93NbX5REXC9gVk+zaoD2CtjX7S9Y1Xpq/GdIVRgq0tI3fpDwU0iYRxsKDzVWL81L4D60Mfq7N3N41TrmdiRX3bYwv/nIupOrdJEsG4P9n8JhtZ7NZydbgqcgHWM9jnYeXewl14= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hijo+N4W; 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="hijo+N4W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD794C4CEEF; Mon, 5 May 2025 23:16:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746487014; bh=TBiToOS22xXZR/yDLGAa0T27o9hnSJUf3WOeI4oWn+I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hijo+N4WP7o7uVFa6Zjgjqizh7luTpxPVRKCwHmTCJIOje3oYcwaGPvHYSJ71JoAM YQAznE4SeVoqbZr4P5oIBjZdmztzTFTVZfiLV/I9mEUWQlqvHh0k2x2yNoP2Ip+xwz l0o5DOTRhtd5cT5uwRyBPkhg6jQY1BoHjTp84EnwCLxmujoe+tesHqQPCTQ0NlQ/c/ GQA1kS3PfBZiWB6OaQoNCkMC+kdtT+3NpUwH0uHk03F2FSztFsQ5epXX/ghoX5z+tu bsEOzu5PEFh9Xu1a2x9aZMyJjFZfh6vflpmaA4cITDMVkyapbNdJMWwDwob5TBK+f3 BORqHawXuWiMg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Bjorn Helgaas , Xiaochun Lee , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 108/153] PCI: Fix old_size lower bound in calculate_iosize() too Date: Mon, 5 May 2025 19:12:35 -0400 Message-Id: <20250505231320.2695319-108-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505231320.2695319-1-sashal@kernel.org> References: <20250505231320.2695319-1-sashal@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=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.181 Content-Transfer-Encoding: 8bit From: Ilpo Järvinen [ Upstream commit ff61f380de5652e723168341480cc7adf1dd6213 ] Commit 903534fa7d30 ("PCI: Fix resource double counting on remove & rescan") fixed double counting of mem resources because of old_size being applied too early. Fix a similar counting bug on the io resource side. Link: https://lore.kernel.org/r/20241216175632.4175-6-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen Signed-off-by: Bjorn Helgaas Tested-by: Xiaochun Lee Signed-off-by: Sasha Levin --- drivers/pci/setup-bus.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index a159bfdfa2512..04c3ae8efc0f8 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -806,11 +806,9 @@ static resource_size_t calculate_iosize(resource_size_t size, size = (size & 0xff) + ((size & ~0xffUL) << 2); #endif size = size + size1; - if (size < old_size) - size = old_size; - size = ALIGN(max(size, add_size) + children_add_size, align); - return size; + size = max(size, add_size) + children_add_size; + return ALIGN(max(size, old_size), align); } static resource_size_t calculate_memsize(resource_size_t size, -- 2.39.5