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From patchwork Mon Dec 27 18:31:09 2021
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X-Patchwork-Submitter: Daniel Golle <daniel@makrotopia.org>
X-Patchwork-Id: 12699993
X-Patchwork-Delegate: kuba@kernel.org
Return-Path: <netdev-owner@kernel.org>
Date: Mon, 27 Dec 2021 18:31:09 +0000
From: Daniel Golle <daniel@makrotopia.org>
To: linux-mediatek@lists.infradead.org, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Felix Fietkau <nbd@nbd.name>, John Crispin <john@phrozen.org>,
Sean Wang <sean.wang@mediatek.com>,
Mark Lee <Mark-MC.Lee@mediatek.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Andrew Lunn <andrew@lunn.ch>
Subject: [PATCH v5 1/2] net: ethernet: mtk_eth_soc: fix return value of MDIO
ops
Message-ID: <YcoGbf/klFzaJhGE@makrotopia.org>
References: <YcnoAscVe+2YILT8@shell.armlinux.org.uk>
<YcnlMtninjjjPhjI@makrotopia.org>
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<YcnlMtninjjjPhjI@makrotopia.org>
Precedence: bulk
List-ID: <netdev.vger.kernel.org>
X-Mailing-List: netdev@vger.kernel.org
X-Patchwork-Delegate: kuba@kernel.org
Instead of returning -1 (-EPERM) when MDIO bus is stuck busy
while writing or 0xffff if it happens while reading, return the
appropriate -EBUSY. Also fix return type to int instead of u32.
Fixes: 656e705243fd0 ("net-next: mediatek: add support for MT7623 ethernet")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
v5: fix incomplete unification of variable names phy_reg vs. phy_register
v4: clean-up return values and types, split into two commits
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -95,31 +95,31 @@ static int mtk_mdio_busy_wait(struct mtk
return -1;
}
-static u32 _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr,
- u32 phy_register, u32 write_data)
+static int _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg,
+ u32 write_data)
{
if (mtk_mdio_busy_wait(eth))
- return -1;
+ return -EBUSY;
write_data &= 0xffff;
mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_WRITE |
- (phy_register << PHY_IAC_REG_SHIFT) |
+ (phy_reg << PHY_IAC_REG_SHIFT) |
(phy_addr << PHY_IAC_ADDR_SHIFT) | write_data,
MTK_PHY_IAC);
if (mtk_mdio_busy_wait(eth))
- return -1;
+ return -EBUSY;
return 0;
}
-static u32 _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg)
+static int _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg)
{
u32 d;
if (mtk_mdio_busy_wait(eth))
- return 0xffff;
+ return -EBUSY;
mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_READ |
(phy_reg << PHY_IAC_REG_SHIFT) |
@@ -127,7 +127,7 @@ static u32 _mtk_mdio_read(struct mtk_eth
MTK_PHY_IAC);
if (mtk_mdio_busy_wait(eth))
- return 0xffff;
+ return -EBUSY;
d = mtk_r32(eth, MTK_PHY_IAC) & 0xffff;
|
