i2c-algo-pcf: Delete broken 10-bit address support

The 10-bit address support in i2c-algo-pcf is so heavily broken that
it can't have ever been used. Nobody ever complained, so I'll take it
that nobody needs it. Let's just delete it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 13 insertions, 72 deletions

diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index ab2e6f3498b4..8907b0191677 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -203,35 +203,6 @@ static int pcf_init_8584 (struct i2c_algo_pcf_data *adap)
 /* ----- Utility functions
  */
 
-static inline int try_address(struct i2c_algo_pcf_data *adap,
-                       unsigned char addr, int retries)
-{
-        int i, status, ret = -1;
-        int wfp;
-        for (i=0;i<retries;i++) {
-                i2c_outb(adap, addr);
-                i2c_start(adap);
-                status = get_pcf(adap, 1);
-                if ((wfp = wait_for_pin(adap, &status)) >= 0) {
-                        if ((status & I2C_PCF_LRB) == 0) { 
-                                i2c_stop(adap);
-                                break;  /* success! */
-                        }
-                }
-                if (wfp == -EINTR) {
-                        /* arbitration lost */
-                        udelay(adap->udelay);
-                        return -EINTR;
-                }
-                i2c_stop(adap);
-                udelay(adap->udelay);
-        }
-        DEB2(if (i) printk(KERN_DEBUG "i2c-algo-pcf.o: needed %d retries for %d\n",i,
-                           addr));
-        return ret;
-}
-
-
 static int pcf_sendbytes(struct i2c_adapter *i2c_adap, const char *buf,
                          int count, int last)
 {
@@ -321,47 +292,19 @@ static int pcf_readbytes(struct i2c_adapter *i2c_adap, char *buf,
 }
 
 
-static inline int pcf_doAddress(struct i2c_algo_pcf_data *adap,
-                                struct i2c_msg *msg, int retries) 
+static int pcf_doAddress(struct i2c_algo_pcf_data *adap,
+                         struct i2c_msg *msg)
 {
         unsigned short flags = msg->flags;
         unsigned char addr;
-        int ret;
-        if ( (flags & I2C_M_TEN)  ) { 
-                /* a ten bit address */
-                addr = 0xf0 | (( msg->addr >> 7) & 0x03);
-                DEB2(printk(KERN_DEBUG "addr0: %d\n",addr));
-                /* try extended address code...*/
-                ret = try_address(adap, addr, retries);
-                if (ret!=1) {
-                        printk(KERN_ERR "died at extended address code.\n");
-                        return -EREMOTEIO;
-                }
-                /* the remaining 8 bit address */
-                i2c_outb(adap,msg->addr & 0x7f);
-/* Status check comes here */
-                if (ret != 1) {
-                        printk(KERN_ERR "died at 2nd address code.\n");
-                        return -EREMOTEIO;
-                }
-                if ( flags & I2C_M_RD ) {
-                        i2c_repstart(adap);
-                        /* okay, now switch into reading mode */
-                        addr |= 0x01;
-                        ret = try_address(adap, addr, retries);
-                        if (ret!=1) {
-                                printk(KERN_ERR "died at extended address code.\n");
-                                return -EREMOTEIO;
-                        }
-                }
-        } else {                /* normal 7bit address  */
-                addr = ( msg->addr << 1 );
-                if (flags & I2C_M_RD )
-                        addr |= 1;
-                if (flags & I2C_M_REV_DIR_ADDR )
-                        addr ^= 1;
-                i2c_outb(adap, addr);
-        }
+
+        addr = msg->addr << 1;
+        if (flags & I2C_M_RD)
+                addr |= 1;
+        if (flags & I2C_M_REV_DIR_ADDR)
+                addr ^= 1;
+        i2c_outb(adap, addr);
+
         return 0;
 }
 
@@ -390,7 +333,7 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap,
                      pmsg->flags & I2C_M_RD ? "read" : "write",
                      pmsg->len, pmsg->addr, i + 1, num);)
     
-                ret = pcf_doAddress(adap, pmsg, i2c_adap->retries);
+                ret = pcf_doAddress(adap, pmsg);
 
                 /* Send START */
                 if (i == 0) {
@@ -453,7 +396,7 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap,
 static u32 pcf_func(struct i2c_adapter *adap)
 {
         return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | 
-               I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING; 
+               I2C_FUNC_PROTOCOL_MANGLING;
 }
 
 /* -----exported algorithm data: -------------------------------------  */
@@ -475,9 +418,7 @@ int i2c_pcf_add_bus(struct i2c_adapter *adap)
 
         /* register new adapter to i2c module... */
         adap->algo = &pcf_algo;
-
-        adap->timeout = 100;            /* default values, should       */
-        adap->retries = 3;              /* be replaced by defines       */
+        adap->timeout = 100;
 
         if ((rval = pcf_init_8584(pcf_adap)))
                 return rval;