diff mbox series

[net-next] net: phy: remove unneeded masking of PHY register read results

Message ID a644082b-3268-5070-ddaa-ff24ce9840c2@gmail.com
State Accepted
Delegated to: David Miller
Headers show
Series [net-next] net: phy: remove unneeded masking of PHY register read results | expand

Commit Message

Heiner Kallweit Feb. 9, 2019, 8:46 a.m. UTC 
PHY registers are only 16 bits wide, therefore, if the read was
successful, there's no need to mask out the higher 16 bits.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/phy/phy_device.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

David Miller Feb. 9, 2019, 5:29 p.m. UTC | #1 
From: Heiner Kallweit <hkallweit1@gmail.com>
Date: Sat, 9 Feb 2019 09:46:53 +0100

> PHY registers are only 16 bits wide, therefore, if the read was
> successful, there's no need to mask out the higher 16 bits.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Applied, thanks Heiner.
diff mbox series

Patch

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index d4fc1fd8a..31f9e7c49 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -676,13 +676,13 @@  static int get_phy_c45_devs_in_pkg(struct mii_bus *bus, int addr, int dev_addr,
 	phy_reg = mdiobus_read(bus, addr, reg_addr);
 	if (phy_reg < 0)
 		return -EIO;
-	*devices_in_package = (phy_reg & 0xffff) << 16;
+	*devices_in_package = phy_reg << 16;
 
 	reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS1;
 	phy_reg = mdiobus_read(bus, addr, reg_addr);
 	if (phy_reg < 0)
 		return -EIO;
-	*devices_in_package |= (phy_reg & 0xffff);
+	*devices_in_package |= phy_reg;
 
 	/* Bit 0 doesn't represent a device, it indicates c22 regs presence */
 	*devices_in_package &= ~BIT(0);
@@ -746,13 +746,13 @@  static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id,
 		phy_reg = mdiobus_read(bus, addr, reg_addr);
 		if (phy_reg < 0)
 			return -EIO;
-		c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16;
+		c45_ids->device_ids[i] = phy_reg << 16;
 
 		reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2;
 		phy_reg = mdiobus_read(bus, addr, reg_addr);
 		if (phy_reg < 0)
 			return -EIO;
-		c45_ids->device_ids[i] |= (phy_reg & 0xffff);
+		c45_ids->device_ids[i] |= phy_reg;
 	}
 	*phy_id = 0;
 	return 0;
@@ -789,14 +789,14 @@  static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
 		return (phy_reg == -EIO || phy_reg == -ENODEV) ? -ENODEV : -EIO;
 	}
 
-	*phy_id = (phy_reg & 0xffff) << 16;
+	*phy_id = phy_reg << 16;
 
 	/* Grab the bits from PHYIR2, and put them in the lower half */
 	phy_reg = mdiobus_read(bus, addr, MII_PHYSID2);
 	if (phy_reg < 0)
 		return -EIO;
 
-	*phy_id |= (phy_reg & 0xffff);
+	*phy_id |= phy_reg;
 
 	return 0;
 }