return 0;
 }
 
-static u8 i2c_readbytes (struct nxt200x_state* state, u8 addr, u8* buf, u8 len)
+static int i2c_readbytes(struct nxt200x_state *state, u8 addr, u8 *buf, u8 len)
 {
        int err;
        struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, .buf = buf, .len = len };
        return 0;
 }
 
-static u8 nxt200x_readbytes (struct nxt200x_state* state, u8 reg, u8* buf, u8 len)
+static int nxt200x_readbytes(struct nxt200x_state *state, u8 reg, u8 *buf, u8 len)
 {
        u8 reg2 [] = { reg };
 
 
        return 0;
 }
 
-static u8 i2c_readbytes (struct or51211_state* state, u8 reg, u8* buf, int len)
+static int i2c_readbytes(struct or51211_state *state, u8 reg, u8 *buf, int len)
 {
        int err;
        struct i2c_msg msg;
 
        dprintk("vino_free_buffer_with_count(): count = %d\n", count);
 
        for (i = 0; i < count; i++) {
-               ClearPageReserved(virt_to_page(fb->desc_table.virtual[i]));
+               ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
                dma_unmap_single(NULL,
                                 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
                                 PAGE_SIZE, DMA_FROM_DEVICE);
                                dma_data_addr + VINO_PAGE_SIZE * j;
                }
 
-               SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
+               SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
        }
 
        /* page_count needs to be set anyway, because the descriptor table has
                                dma_data_addr + VINO_PAGE_SIZE * j;
                }
 
-               SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
+               SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
        }
 
        /* page_count needs to be set anyway, because the descriptor table has