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 CB21723182B; Mon, 2 Jun 2025 14:57:06 +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=1748876226; cv=none; b=WfIntRihXbJ9CPe8FLRtRx78vdkhTbfUbe6uW2nD6jNV7lk40C3WavslBDBy692X1OdBb8QWtlhjAtyidhjyPthpkMGpA+a/YtvwkFcEs0XpyRluXItRE+P9G82cshM+kZP1/Bkp69UfD46fCLnne3P5TrzSZTFz7Y31ziKUiaM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748876226; c=relaxed/simple; bh=qgQb9xzACLfRZZN1WAJgIudX0FMXxa54xcdDWv+tisw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=HGPReMi+XYbnimUBqZKJqrPrGIpehMh5eZlWI0loKMLa04Y3blv5zJH0gXNxZB5Mh2lhueXon5R5svqZL87w72ABcgB60U5j6TlDnrMR4UN8ImL9Ty8c98C/GFOi2s/d6QRVmx4DAkStDqseZXM0ZmYfG/T1/5bU8WpPI6mGPd0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zy65Zy8J; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zy65Zy8J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2ED76C4CEEB; Mon, 2 Jun 2025 14:57:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1748876226; bh=qgQb9xzACLfRZZN1WAJgIudX0FMXxa54xcdDWv+tisw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zy65Zy8JRLVT2euO+x/VcGMmhBgb4H2SkUu9mXQyS8Qyz10NzngrQdy2YtM8UsYXL ayVZxYSCMi+so/CLNN0F70bj/7FIVfdUvLSb2LP4+YL+LOeVxUiQDtMDt3CST6pBtR mTd+zjHClmAYJm5NsMRetOHrL7nJChYLuqQdE3hY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Bjorn Helgaas , Xiaochun Lee , Sasha Levin Subject: [PATCH 5.15 111/207] PCI: Fix old_size lower bound in calculate_iosize() too Date: Mon, 2 Jun 2025 15:48:03 +0200 Message-ID: <20250602134303.076650224@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250602134258.769974467@linuxfoundation.org> References: <20250602134258.769974467@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ 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