staging: et131x: Fix endian bugs in et131x_get_regs()

et131x_get_regs() calls et131x_mii_read(), passing the address of a u32
which is cast to a (u16 *). This works fine for little endian systems,
but not for big endian. Change so that the types are cast, not pointers
to the types.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 82508fb0d934977722f8d37a8eab6a5acc9ec914..d2fbe910371d3046e8db01d293b0df187c240f9b 100644 (file)
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -3456,6 +3456,7 @@ static void et131x_get_regs(struct net_device *netdev,
        struct address_map __iomem *aregs = adapter->regs;
        u32 *regs_buff = regs_data;
        u32 num = 0;
+       u16 tmp;
 
        memset(regs_data, 0, et131x_get_regs_len(netdev));
 
@@ -3463,44 +3464,68 @@ static void et131x_get_regs(struct net_device *netdev,
                        adapter->pdev->device;
 
        /* PHY regs */
-       et131x_mii_read(adapter, MII_BMCR, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_BMSR, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_PHYSID1, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_PHYSID2, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_ADVERTISE, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_LPA, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_EXPANSION, (u16 *)&regs_buff[num++]);
+       et131x_mii_read(adapter, MII_BMCR, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_BMSR, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_PHYSID1, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_PHYSID2, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_ADVERTISE, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_LPA, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_EXPANSION, &tmp);
+       regs_buff[num++] = tmp;
        /* Autoneg next page transmit reg */
-       et131x_mii_read(adapter, 0x07, (u16 *)&regs_buff[num++]);
+       et131x_mii_read(adapter, 0x07, &tmp);
+       regs_buff[num++] = tmp;
        /* Link partner next page reg */
-       et131x_mii_read(adapter, 0x08, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_CTRL1000, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_STAT1000, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, 0x0b, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, 0x0c, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_MMD_CTRL, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_MMD_DATA, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, MII_ESTATUS, (u16 *)&regs_buff[num++]);
-
-       et131x_mii_read(adapter, PHY_INDEX_REG, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_DATA_REG, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
-                       (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL,
-                       (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL+1,
-                       (u16 *)&regs_buff[num++]);
-
-       et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL,
-                       (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_CONFIG, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_PHY_CONTROL, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_INTERRUPT_MASK, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_INTERRUPT_STATUS,
-                       (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_PHY_STATUS, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_LED_1, (u16 *)&regs_buff[num++]);
-       et131x_mii_read(adapter, PHY_LED_2, (u16 *)&regs_buff[num++]);
+       et131x_mii_read(adapter, 0x08, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_CTRL1000, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_STAT1000, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, 0x0b, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, 0x0c, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_MMD_CTRL, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_MMD_DATA, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, MII_ESTATUS, &tmp);
+       regs_buff[num++] = tmp;
+
+       et131x_mii_read(adapter, PHY_INDEX_REG, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_DATA_REG, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL + 1, &tmp);
+       regs_buff[num++] = tmp;
+
+       et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_CONFIG, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_PHY_CONTROL, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_INTERRUPT_MASK, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_PHY_STATUS, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_LED_1, &tmp);
+       regs_buff[num++] = tmp;
+       et131x_mii_read(adapter, PHY_LED_2, &tmp);
+       regs_buff[num++] = tmp;
 
        /* Global regs */
        regs_buff[num++] = readl(&aregs->global.txq_start_addr);