linux-kernel - [PATCH AUTOSEL 6.6 21/36] PCI: mvebu: Use FIELD

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231107154654.3765336-21-sashal@kernel.org>
Date:   Tue,  7 Nov 2023 10:46:03 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Sasha Levin <sashal@...nel.org>, thomas.petazzoni@...tlin.com,
        pali@...nel.org, lpieralisi@...nel.org, kw@...ux.com,
        linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.6 21/36] PCI: mvebu: Use FIELD_PREP() with Link Width

From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

[ Upstream commit 408599ec561ad5862cda4f107626009f6fa97a74 ]

mvebu_pcie_setup_hw() setups the Maximum Link Width field in the Link
Capabilities registers using an open-coded variant of FIELD_PREP() with
a literal in shift. Improve readability by using
FIELD_PREP(PCI_EXP_LNKCAP_MLW, ...).

Link: https://lore.kernel.org/r/20230919125648.1920-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/controller/pci-mvebu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index 60810a1fbfb75..29fe09c99e7d9 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -264,7 +264,7 @@ static void mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)
 	 */
 	lnkcap = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_LNKCAP);
 	lnkcap &= ~PCI_EXP_LNKCAP_MLW;
-	lnkcap |= (port->is_x4 ? 4 : 1) << 4;
+	lnkcap |= FIELD_PREP(PCI_EXP_LNKCAP_MLW, port->is_x4 ? 4 : 1);
 	mvebu_writel(port, lnkcap, PCIE_CAP_PCIEXP + PCI_EXP_LNKCAP);
 
 	/* Disable Root Bridge I/O space, memory space and bus mastering. */
-- 
2.42.0