[media] xc5000: get rid of positive error codes

Errors should also be negative and should follow the Kernel
standards.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c
index 5cd09a6..94278cc 100644 (file)
--- a/drivers/media/tuners/xc5000.c
+++ b/drivers/media/tuners/xc5000.c
@@ -75,13 +75,6 @@ struct xc5000_priv {
 #define XC_RF_MODE_AIR                 0
 #define XC_RF_MODE_CABLE               1
 
-/* Result codes */
-#define XC_RESULT_SUCCESS              0
-#define XC_RESULT_RESET_FAILURE                1
-#define XC_RESULT_I2C_WRITE_FAILURE    2
-#define XC_RESULT_I2C_READ_FAILURE     3
-#define XC_RESULT_OUT_OF_RANGE         5
-
 /* Product id */
 #define XC_PRODUCT_ID_FW_NOT_LOADED    0x2000
 #define XC_PRODUCT_ID_FW_LOADED        0x1388
@@ -258,9 +251,9 @@ static int xc_send_i2c_data(struct xc5000_priv *priv, u8 *buf, int len)
 
        if (i2c_transfer(priv->i2c_props.adap, &msg, 1) != 1) {
                printk(KERN_ERR "xc5000: I2C write failed (len=%i)\n", len);
-               return XC_RESULT_I2C_WRITE_FAILURE;
+               return -EREMOTEIO;
        }
-       return XC_RESULT_SUCCESS;
+       return 0;
 }
 
 #if 0
@@ -297,7 +290,7 @@ static int xc5000_readreg(struct xc5000_priv *priv, u16 reg, u16 *val)
        }
 
        *val = (bval[0] << 8) | bval[1];
-       return XC_RESULT_SUCCESS;
+       return 0;
 }
 
 static void xc_wait(int wait_ms)
@@ -320,13 +313,13 @@ static int xc5000_TunerReset(struct dvb_frontend *fe)
                                           XC5000_TUNER_RESET, 0);
                if (ret) {
                        printk(KERN_ERR "xc5000: reset failed\n");
-                       return XC_RESULT_RESET_FAILURE;
+                       return ret;
                }
        } else {
                printk(KERN_ERR "xc5000: no tuner reset callback function, fatal\n");
-               return XC_RESULT_RESET_FAILURE;
+               return -EINVAL;
        }
-       return XC_RESULT_SUCCESS;
+       return 0;
 }
 
 static int xc_write_reg(struct xc5000_priv *priv, u16 regAddr, u16 i2cData)
@@ -340,11 +333,11 @@ static int xc_write_reg(struct xc5000_priv *priv, u16 regAddr, u16 i2cData)
        buf[2] = (i2cData >> 8) & 0xFF;
        buf[3] = i2cData & 0xFF;
        result = xc_send_i2c_data(priv, buf, 4);
-       if (result == XC_RESULT_SUCCESS) {
+       if (result == 0) {
                /* wait for busy flag to clear */
-               while ((WatchDogTimer > 0) && (result == XC_RESULT_SUCCESS)) {
+               while ((WatchDogTimer > 0) && (result == 0)) {
                        result = xc5000_readreg(priv, XREG_BUSY, (u16 *)buf);
-                       if (result == XC_RESULT_SUCCESS) {
+                       if (result == 0) {
                                if ((buf[0] == 0) && (buf[1] == 0)) {
                                        /* busy flag cleared */
                                        break;
@@ -356,7 +349,7 @@ static int xc_write_reg(struct xc5000_priv *priv, u16 regAddr, u16 i2cData)
                }
        }
        if (WatchDogTimer <= 0)
-               result = XC_RESULT_I2C_WRITE_FAILURE;
+               result = -EREMOTEIO;
 
        return result;
 }
@@ -377,7 +370,7 @@ static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence)
                        /* RESET command */
                        result = xc5000_TunerReset(fe);
                        index += 2;
-                       if (result != XC_RESULT_SUCCESS)
+                       if (result != 0)
                                return result;
                } else if (len & 0x8000) {
                        /* WAIT command */
@@ -404,7 +397,7 @@ static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence)
                                result = xc_send_i2c_data(priv, buf,
                                        nbytes_to_send);
 
-                               if (result != XC_RESULT_SUCCESS)
+                               if (result != 0)
                                        return result;
 
                                pos += nbytes_to_send - 2;
@@ -412,7 +405,7 @@ static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence)
                        index += len;
                }
        }
-       return XC_RESULT_SUCCESS;
+       return 0;
 }
 
 static int xc_initialize(struct xc5000_priv *priv)
@@ -437,7 +430,7 @@ static int xc_SetTVStandard(struct xc5000_priv *priv,
        }
 
        ret = xc_write_reg(priv, XREG_VIDEO_MODE, VideoMode);
-       if (ret == XC_RESULT_SUCCESS)
+       if (ret == 0)
                ret = xc_write_reg(priv, XREG_AUDIO_MODE, AudioMode);
 
        return ret;
@@ -467,7 +460,7 @@ static int xc_set_RF_frequency(struct xc5000_priv *priv, u32 freq_hz)
 
        if ((freq_hz > xc5000_tuner_ops.info.frequency_max) ||
                (freq_hz < xc5000_tuner_ops.info.frequency_min))
-               return XC_RESULT_OUT_OF_RANGE;
+               return -EINVAL;
 
        freq_code = (u16)(freq_hz / 15625);
 
@@ -500,7 +493,7 @@ static int xc_get_frequency_error(struct xc5000_priv *priv, u32 *freq_error_hz)
        u32 tmp;
 
        result = xc5000_readreg(priv, XREG_FREQ_ERROR, &regData);
-       if (result != XC_RESULT_SUCCESS)
+       if (result != 0)
                return result;
 
        tmp = (u32)regData;
@@ -521,7 +514,7 @@ static int xc_get_version(struct xc5000_priv *priv,
        int result;
 
        result = xc5000_readreg(priv, XREG_VERSION, &data);
-       if (result != XC_RESULT_SUCCESS)
+       if (result != 0)
                return result;
 
        (*hw_majorversion) = (data >> 12) & 0x0F;
@@ -543,7 +536,7 @@ static int xc_get_hsync_freq(struct xc5000_priv *priv, u32 *hsync_freq_hz)
        int result;
 
        result = xc5000_readreg(priv, XREG_HSYNC_FREQ, &regData);
-       if (result != XC_RESULT_SUCCESS)
+       if (result != 0)
                return result;
 
        (*hsync_freq_hz) = ((regData & 0x0fff) * 763)/100;
@@ -593,7 +586,7 @@ static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz, int mode)
 
        dprintk(1, "%s(%u)\n", __func__, freq_hz);
 
-       if (xc_set_RF_frequency(priv, freq_hz) != XC_RESULT_SUCCESS)
+       if (xc_set_RF_frequency(priv, freq_hz) != 0)
                return 0;
 
        if (mode == XC_TUNE_ANALOG) {
@@ -607,7 +600,7 @@ static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz, int mode)
 static int xc_set_xtal(struct dvb_frontend *fe)
 {
        struct xc5000_priv *priv = fe->tuner_priv;
-       int ret = XC_RESULT_SUCCESS;
+       int ret = 0;
 
        switch (priv->chip_id) {
        default:
@@ -649,23 +642,22 @@ static int xc5000_fwupload(struct dvb_frontend *fe)
                priv->i2c_props.adap->dev.parent);
        if (ret) {
                printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
-               ret = XC_RESULT_RESET_FAILURE;
                goto out;
        } else {
                printk(KERN_DEBUG "xc5000: firmware read %Zu bytes.\n",
                       fw->size);
-               ret = XC_RESULT_SUCCESS;
+               ret = 0;
        }
 
        if (fw->size != desired_fw->size) {
                printk(KERN_ERR "xc5000: firmware incorrect size\n");
-               ret = XC_RESULT_RESET_FAILURE;
+               ret = -EINVAL;
        } else {
                printk(KERN_INFO "xc5000: firmware uploading...\n");
                ret = xc_load_i2c_sequence(fe,  fw->data);
-               if (XC_RESULT_SUCCESS == ret)
+               if (0 == ret)
                        ret = xc_set_xtal(fe);
-               if (XC_RESULT_SUCCESS == ret)
+               if (0 == ret)
                        printk(KERN_INFO "xc5000: firmware upload complete...\n");
                else
                        printk(KERN_ERR "xc5000: firmware upload failed...\n");
@@ -744,7 +736,7 @@ static int xc5000_set_params(struct dvb_frontend *fe)
        u32 freq = fe->dtv_property_cache.frequency;
        u32 delsys  = fe->dtv_property_cache.delivery_system;
 
-       if (xc_load_fw_and_init_tuner(fe, 0) != XC_RESULT_SUCCESS) {
+       if (xc_load_fw_and_init_tuner(fe, 0) != 0) {
                dprintk(1, "Unable to load firmware and init tuner\n");
                return -EINVAL;
        }
@@ -821,7 +813,7 @@ static int xc5000_set_params(struct dvb_frontend *fe)
                __func__, freq, priv->freq_hz);
 
        ret = xc_SetSignalSource(priv, priv->rf_mode);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR
                        "xc5000: xc_SetSignalSource(%d) failed\n",
                        priv->rf_mode);
@@ -831,13 +823,13 @@ static int xc5000_set_params(struct dvb_frontend *fe)
        ret = xc_SetTVStandard(priv,
                XC5000_Standard[priv->video_standard].VideoMode,
                XC5000_Standard[priv->video_standard].AudioMode, 0);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
                return -EREMOTEIO;
        }
 
        ret = xc_set_IF_frequency(priv, priv->if_khz);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR "xc5000: xc_Set_IF_frequency(%d) failed\n",
                       priv->if_khz);
                return -EIO;
@@ -862,15 +854,15 @@ static int xc5000_is_firmware_loaded(struct dvb_frontend *fe)
        u16 id;
 
        ret = xc5000_readreg(priv, XREG_PRODUCT_ID, &id);
-       if (ret == XC_RESULT_SUCCESS) {
+       if (ret == 0) {
                if (id == XC_PRODUCT_ID_FW_NOT_LOADED)
-                       ret = XC_RESULT_RESET_FAILURE;
+                       ret = -ENOENT;
                else
-                       ret = XC_RESULT_SUCCESS;
+                       ret = 0;
        }
 
        dprintk(1, "%s() returns %s id = 0x%x\n", __func__,
-               ret == XC_RESULT_SUCCESS ? "True" : "False", id);
+               ret == 0 ? "True" : "False", id);
        return ret;
 }
 
@@ -937,7 +929,7 @@ static int xc5000_set_tv_freq(struct dvb_frontend *fe,
 
 tune_channel:
        ret = xc_SetSignalSource(priv, priv->rf_mode);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR
                        "xc5000: xc_SetSignalSource(%d) failed\n",
                        priv->rf_mode);
@@ -947,7 +939,7 @@ tune_channel:
        ret = xc_SetTVStandard(priv,
                XC5000_Standard[priv->video_standard].VideoMode,
                XC5000_Standard[priv->video_standard].AudioMode, 0);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
                return -EREMOTEIO;
        }
@@ -966,7 +958,7 @@ tune_channel:
                        /* PLL is unlocked, force reload of the firmware */
                        dprintk(1, "xc5000: PLL not locked (0x%x).  Reloading...\n",
                                pll_lock_status);
-                       if (xc_load_fw_and_init_tuner(fe, 1) != XC_RESULT_SUCCESS) {
+                       if (xc_load_fw_and_init_tuner(fe, 1) != 0) {
                                printk(KERN_ERR "xc5000: Unable to reload fw\n");
                                return -EREMOTEIO;
                        }
@@ -1011,13 +1003,13 @@ static int xc5000_set_radio_freq(struct dvb_frontend *fe,
        ret = xc_SetTVStandard(priv, XC5000_Standard[radio_input].VideoMode,
                               XC5000_Standard[radio_input].AudioMode, radio_input);
 
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
                return -EREMOTEIO;
        }
 
        ret = xc_SetSignalSource(priv, priv->rf_mode);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR
                        "xc5000: xc_SetSignalSource(%d) failed\n",
                        priv->rf_mode);
@@ -1044,7 +1036,7 @@ static int xc5000_set_analog_params(struct dvb_frontend *fe,
        if (priv->i2c_props.adap == NULL)
                return -EINVAL;
 
-       if (xc_load_fw_and_init_tuner(fe, 0) != XC_RESULT_SUCCESS) {
+       if (xc_load_fw_and_init_tuner(fe, 0) != 0) {
                dprintk(1, "Unable to load firmware and init tuner\n");
                return -EINVAL;
        }
@@ -1105,23 +1097,23 @@ static int xc5000_get_status(struct dvb_frontend *fe, u32 *status)
 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force)
 {
        struct xc5000_priv *priv = fe->tuner_priv;
-       int ret = XC_RESULT_SUCCESS;
+       int ret = 0;
        u16 pll_lock_status;
        u16 fw_ck;
 
-       if (force || xc5000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS) {
+       if (force || xc5000_is_firmware_loaded(fe) != 0) {
 
 fw_retry:
 
                ret = xc5000_fwupload(fe);
-               if (ret != XC_RESULT_SUCCESS)
+               if (ret != 0)
                        return ret;
 
                msleep(20);
 
                if (priv->fw_checksum_supported) {
                        if (xc5000_readreg(priv, XREG_FW_CHECKSUM, &fw_ck)
-                           != XC_RESULT_SUCCESS) {
+                           != 0) {
                                dprintk(1, "%s() FW checksum reading failed.\n",
                                        __func__);
                                goto fw_retry;
@@ -1137,7 +1129,7 @@ fw_retry:
                /* Start the tuner self-calibration process */
                ret |= xc_initialize(priv);
 
-               if (ret != XC_RESULT_SUCCESS)
+               if (ret != 0)
                        goto fw_retry;
 
                /* Wait for calibration to complete.
@@ -1148,7 +1140,7 @@ fw_retry:
                xc_wait(100);
 
                if (priv->init_status_supported) {
-                       if (xc5000_readreg(priv, XREG_INIT_STATUS, &fw_ck) != XC_RESULT_SUCCESS) {
+                       if (xc5000_readreg(priv, XREG_INIT_STATUS, &fw_ck) != 0) {
                                dprintk(1, "%s() FW failed reading init status.\n",
                                        __func__);
                                goto fw_retry;
@@ -1191,13 +1183,13 @@ static int xc5000_sleep(struct dvb_frontend *fe)
           was removed in newer versions of the firmware.  The "supported"
           way to sleep the tuner is to pull the reset pin low for 10ms */
        ret = xc5000_TunerReset(fe);
-       if (ret != XC_RESULT_SUCCESS) {
+       if (ret != 0) {
                printk(KERN_ERR
                        "xc5000: %s() unable to shutdown tuner\n",
                        __func__);
                return -EREMOTEIO;
        } else
-               return XC_RESULT_SUCCESS;
+               return 0;
 }
 
 static int xc5000_init(struct dvb_frontend *fe)
@@ -1205,7 +1197,7 @@ static int xc5000_init(struct dvb_frontend *fe)
        struct xc5000_priv *priv = fe->tuner_priv;
        dprintk(1, "%s()\n", __func__);
 
-       if (xc_load_fw_and_init_tuner(fe, 0) != XC_RESULT_SUCCESS) {
+       if (xc_load_fw_and_init_tuner(fe, 0) != 0) {
                printk(KERN_ERR "xc5000: Unable to initialise tuner\n");
                return -EREMOTEIO;
        }
@@ -1327,7 +1319,7 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
        /* Check if firmware has been loaded. It is possible that another
           instance of the driver has loaded the firmware.
         */
-       if (xc5000_readreg(priv, XREG_PRODUCT_ID, &id) != XC_RESULT_SUCCESS)
+       if (xc5000_readreg(priv, XREG_PRODUCT_ID, &id) != 0)
                goto fail;
 
        switch (id) {