From c7b04d1030f505f2d883612ed31a6ddd70182705 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Tue, 7 Jul 2020 03:49:38 +0200 Subject: [PATCH] net: phy: cavium: Improve __iomem mess The MIPS low level register access functions seem to be missing __iomem annotation. This causes lots of sparse warnings, when code casts off the __iomem. Make the Cavium MDIO drivers cleaner by pushing the casts lower down into the helpers, allow the drivers to work as normal, with __iomem. bus->register_base is now an void *, rather than a u64. So forming the mii_bus->id string cannot use %llx any more. Use %px, so this kernel address is still exposed to user space, as it was before. v2: s/cases/causes/g Cc: Sunil Goutham Cc: Robert Richter Reviewed-by: Florian Fainelli Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/phy/mdio-cavium.h | 14 +++++++------- drivers/net/phy/mdio-octeon.c | 5 ++--- drivers/net/phy/mdio-thunder.c | 2 +- 3 files changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/net/phy/mdio-cavium.h b/drivers/net/phy/mdio-cavium.h index e33d3ea9a907..a2245d436f5d 100644 --- a/drivers/net/phy/mdio-cavium.h +++ b/drivers/net/phy/mdio-cavium.h @@ -90,7 +90,7 @@ union cvmx_smix_wr_dat { struct cavium_mdiobus { struct mii_bus *mii_bus; - u64 register_base; + void __iomem *register_base; enum cavium_mdiobus_mode mode; }; @@ -98,20 +98,20 @@ struct cavium_mdiobus { #include -static inline void oct_mdio_writeq(u64 val, u64 addr) +static inline void oct_mdio_writeq(u64 val, void __iomem *addr) { - cvmx_write_csr(addr, val); + cvmx_write_csr((u64 __force)addr, val); } -static inline u64 oct_mdio_readq(u64 addr) +static inline u64 oct_mdio_readq(void __iomem *addr) { - return cvmx_read_csr(addr); + return cvmx_read_csr((u64 __force)addr); } #else #include -#define oct_mdio_writeq(val, addr) writeq(val, (void *)addr) -#define oct_mdio_readq(addr) readq((void *)addr) +#define oct_mdio_writeq(val, addr) writeq(val, addr) +#define oct_mdio_readq(addr) readq(addr) #endif int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum); diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c index 8327382aa568..a2f93948db97 100644 --- a/drivers/net/phy/mdio-octeon.c +++ b/drivers/net/phy/mdio-octeon.c @@ -44,8 +44,7 @@ static int octeon_mdiobus_probe(struct platform_device *pdev) return -ENXIO; } - bus->register_base = - (u64)devm_ioremap(&pdev->dev, mdio_phys, regsize); + bus->register_base = devm_ioremap(&pdev->dev, mdio_phys, regsize); if (!bus->register_base) { dev_err(&pdev->dev, "dev_ioremap failed\n"); return -ENOMEM; @@ -56,7 +55,7 @@ static int octeon_mdiobus_probe(struct platform_device *pdev) oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); bus->mii_bus->name = KBUILD_MODNAME; - snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%llx", bus->register_base); + snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%px", bus->register_base); bus->mii_bus->parent = &pdev->dev; bus->mii_bus->read = cavium_mdiobus_read; diff --git a/drivers/net/phy/mdio-thunder.c b/drivers/net/phy/mdio-thunder.c index 2a97938d1972..3d7eda99d34e 100644 --- a/drivers/net/phy/mdio-thunder.c +++ b/drivers/net/phy/mdio-thunder.c @@ -84,7 +84,7 @@ static int thunder_mdiobus_pci_probe(struct pci_dev *pdev, nexus->buses[i] = bus; i++; - bus->register_base = (u64)nexus->bar0 + + bus->register_base = nexus->bar0 + r.start - pci_resource_start(pdev, 0); smi_en.u64 = 0;