Merge branch 'topic/pcm-drain-nonblock' into for-linus

[pandora-kernel.git] / drivers / media / dvb / frontends / stv0297.c

diff --git a/drivers/media/dvb/frontends/stv0297.c b/drivers/media/dvb/frontends/stv0297.c
index 17e5cb5..4fd7479 100644 (file)
--- a/drivers/media/dvb/frontends/stv0297.c
+++ b/drivers/media/dvb/frontends/stv0297.c
@@ -58,7 +58,7 @@ static int stv0297_writereg(struct stv0297_state *state, u8 reg, u8 data)
 
        if (ret != 1)
                dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
-                       "ret == %i)\n", __FUNCTION__, reg, data, ret);
+                       "ret == %i)\n", __func__, reg, data, ret);
 
        return (ret != 1) ? -1 : 0;
 }
@@ -75,16 +75,16 @@ static int stv0297_readreg(struct stv0297_state *state, u8 reg)
        // this device needs a STOP between the register and data
        if (state->config->stop_during_read) {
                if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret);
                        return -1;
                }
                if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret);
                        return -1;
                }
        } else {
                if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret);
                        return -1;
                }
        }
@@ -115,16 +115,16 @@ static int stv0297_readregs(struct stv0297_state *state, u8 reg1, u8 * b, u8 len
        // this device needs a STOP between the register and data
        if (state->config->stop_during_read) {
                if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret);
                        return -1;
                }
                if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret);
                        return -1;
                }
        } else {
                if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) {
-                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg1, ret);
+                       dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret);
                        return -1;
                }
        }
@@ -358,11 +358,23 @@ static int stv0297_read_ber(struct dvb_frontend *fe, u32 * ber)
 static int stv0297_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
 {
        struct stv0297_state *state = fe->demodulator_priv;
-       u8 STRENGTH[2];
-
-       stv0297_readregs(state, 0x41, STRENGTH, 2);
-       *strength = (STRENGTH[1] & 0x03) << 8 | STRENGTH[0];
-
+       u8 STRENGTH[3];
+       u16 tmp;
+
+       stv0297_readregs(state, 0x41, STRENGTH, 3);
+       tmp = (STRENGTH[1] & 0x03) << 8 | STRENGTH[0];
+       if (STRENGTH[2] & 0x20) {
+               if (tmp < 0x200)
+                       tmp = 0;
+               else
+                       tmp = tmp - 0x200;
+       } else {
+               if (tmp > 0x1ff)
+                       tmp = 0;
+               else
+                       tmp = 0x1ff - tmp;
+       }
+       *strength = (tmp << 7) | (tmp >> 2);
        return 0;
 }
 
@@ -651,7 +663,7 @@ struct dvb_frontend *stv0297_attach(const struct stv0297_config *config,
        struct stv0297_state *state = NULL;
 
        /* allocate memory for the internal state */
-       state = kmalloc(sizeof(struct stv0297_state), GFP_KERNEL);
+       state = kzalloc(sizeof(struct stv0297_state), GFP_KERNEL);
        if (state == NULL)
                goto error;