From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDA33C4167D for ; Tue, 7 Nov 2023 15:48:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344342AbjKGPsq (ORCPT ); Tue, 7 Nov 2023 10:48:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235569AbjKGPsO (ORCPT ); Tue, 7 Nov 2023 10:48:14 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 774C91999; Tue, 7 Nov 2023 07:47:54 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4DD04C433CB; Tue, 7 Nov 2023 15:47:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699372074; bh=WtcUiSA5dnfv2VK8lmxzh4gugyNnWTsAs4G6Ahd3Vm4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kq44vCINqU9FIKFrqni2LlbpyLpYildaPAydBFkt8QHCH9srpJbn4ESRHDwNvTiJ9 jHxG/z5MMlMQTY/y+/Zh+R0+qAM7zFf3HOjG7H92Tbz2TgkLcWeU2H2RzzmlM0tbZm P/ZKmulqKzHaC3d+yDI8gPWEzT5pzrjY1hAc5oYd6kqlDYqdUWXJlRo7S4WSCOY/ny VJrTGU2yhLGpr/rVLypiC4n8hEyQFujgLLb1MghVn1UXVnDHpeaKxpiRFen3kwuV74 YCIaMzQYIEHTBeJUXPWebYHjVQ9FqNbM7M7VRJEafWeaoS160VSj1FrwAQlWw0LkwB YtgxvjozH22GA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Bjorn Helgaas , Jonathan Cameron , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 25/36] PCI: Use FIELD_GET() to extract Link Width Date: Tue, 7 Nov 2023 10:46:07 -0500 Message-ID: <20231107154654.3765336-25-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231107154654.3765336-1-sashal@kernel.org> References: <20231107154654.3765336-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Ilpo Järvinen [ Upstream commit d1f9b39da4a5347150246871325190018cda8cb3 ] Use FIELD_GET() to extract PCIe Negotiated and Maximum Link Width fields instead of custom masking and shifting. Link: https://lore.kernel.org/r/20230919125648.1920-7-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen [bhelgaas: drop duplicate include of ] Signed-off-by: Bjorn Helgaas Reviewed-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/pci/pci-sysfs.c | 5 ++--- drivers/pci/pci.c | 5 ++--- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index d9eede2dbc0e1..5a6241044c3c8 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -12,7 +12,7 @@ * Modeled after usb's driverfs.c */ - +#include #include #include #include @@ -230,8 +230,7 @@ static ssize_t current_link_width_show(struct device *dev, if (err) return -EINVAL; - return sysfs_emit(buf, "%u\n", - (linkstat & PCI_EXP_LNKSTA_NLW) >> PCI_EXP_LNKSTA_NLW_SHIFT); + return sysfs_emit(buf, "%u\n", FIELD_GET(PCI_EXP_LNKSTA_NLW, linkstat)); } static DEVICE_ATTR_RO(current_link_width); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5e51e8bd5c13a..ec43ebfc24a5d 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -6260,8 +6260,7 @@ u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev, pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); next_speed = pcie_link_speed[lnksta & PCI_EXP_LNKSTA_CLS]; - next_width = (lnksta & PCI_EXP_LNKSTA_NLW) >> - PCI_EXP_LNKSTA_NLW_SHIFT; + next_width = FIELD_GET(PCI_EXP_LNKSTA_NLW, lnksta); next_bw = next_width * PCIE_SPEED2MBS_ENC(next_speed); @@ -6333,7 +6332,7 @@ enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev) pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); if (lnkcap) - return (lnkcap & PCI_EXP_LNKCAP_MLW) >> 4; + return FIELD_GET(PCI_EXP_LNKCAP_MLW, lnkcap); return PCIE_LNK_WIDTH_UNKNOWN; } -- 2.42.0