linux-kernel - [PATCH] net: mdio-octeon: Fix pointer/integer casts

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-next>] [day] [month] [year] [list]

Date:   Sun, 10 Nov 2019 16:42:11 -0800
From:   Olof Johansson <olof@...om.net>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>,
        Olof Johansson <olof@...om.net>
Subject: [PATCH] net: mdio-octeon: Fix pointer/integer casts

Fixes a bunch of these warnings on arm allmodconfig:

In file included from /build/drivers/net/phy/mdio-cavium.c:11:
/build/drivers/net/phy/mdio-cavium.c: In function 'cavium_mdiobus_set_mode':
/build/drivers/net/phy/mdio-cavium.h:114:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  114 | #define oct_mdio_readq(addr)  readq((void *)addr)
      |                                     ^
/build/drivers/net/phy/mdio-cavium.c:21:16: note: in expansion of macro 'oct_mdio_readq'
   21 |  smi_clk.u64 = oct_mdio_readq(p->register_base + SMI_CLK);
      |                ^~~~~~~~~~~~~~

Fixes: 171a9bae68c7 ("staging/octeon: Allow test build on !MIPS")
Signed-off-by: Olof Johansson <olof@...om.net>
---
 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 b7f89ad27465f..1cf81f0bc585f 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 <asm/octeon/octeon.h>
 
-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)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)addr);
 }
 #else
 #include <linux/io-64-nonatomic-lo-hi.h>
 
-#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 8327382aa5689..c58ab8acd485a 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, "%p", 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 b6128ae7f14f3..280cf84d4116e 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;
-- 
2.11.0