iwlwifi: remove debugfs logspam

There really is no point in printing very verbose
error messages when somebody tries to access a
debugfs file before it is ready. Or even worse,
printing verbose messages when memory allocation
fails which *already* prints a huge warning.

Remove all IWL_ERR messages from debugfs.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index c93f4e7..11ca48e 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -230,10 +230,8 @@ static ssize_t iwl_dbgfs_sram_read(struct file *file,
        /* default is to dump the entire data segment */
        if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
                priv->dbgfs_sram_offset = 0x800000;
-               if (!priv->ucode_loaded) {
-                       IWL_ERR(priv, "No uCode has been loadded.\n");
+               if (!priv->ucode_loaded)
                        return -EINVAL;
-               }
                img = &priv->fw->img[priv->cur_ucode];
                priv->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
        }
@@ -411,23 +409,18 @@ static ssize_t iwl_dbgfs_nvm_read(struct file *file,
        size_t eeprom_len = priv->cfg->base_params->eeprom_size;
        buf_size = 4 * eeprom_len + 256;
 
-       if (eeprom_len % 16) {
-               IWL_ERR(priv, "NVM size is not multiple of 16.\n");
+       if (eeprom_len % 16)
                return -ENODATA;
-       }
 
        ptr = priv->eeprom;
-       if (!ptr) {
-               IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
+       if (!ptr)
                return -ENOMEM;
-       }
 
        /* 4 characters for byte 0xYY */
        buf = kzalloc(buf_size, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
+
        eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
        pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s, "
                        "version: 0x%x\n",
@@ -461,10 +454,8 @@ static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
                return -EAGAIN;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
        if (supp_band) {
@@ -566,10 +557,8 @@ static ssize_t iwl_dbgfs_rx_handlers_read(struct file *file,
        ssize_t ret;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        for (cnt = 0; cnt < REPLY_MAX; cnt++) {
                if (priv->rx_handlers_stats[cnt] > 0)
@@ -683,11 +672,8 @@ static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
                return -EFAULT;
        if (!iwl_is_any_associated(priv))
                priv->disable_ht40 = ht40 ? true : false;
-       else {
-               IWL_ERR(priv, "Sta associated with AP - "
-                       "Change to 40MHz channel support is not allowed\n");
+       else
                return -EINVAL;
-       }
 
        return count;
 }
@@ -834,10 +820,8 @@ static ssize_t iwl_dbgfs_traffic_log_read(struct file *file,
        ssize_t ret;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
        if (priv->tx_traffic && iwl_have_debug_level(IWL_DL_TX)) {
                ptr = priv->tx_traffic;
                pos += scnprintf(buf + pos, bufsz - pos,
@@ -950,10 +934,8 @@ static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
                return -EAGAIN;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        /*
         * the statistic information display here is based on
@@ -1379,10 +1361,8 @@ static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
                return -EAGAIN;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        /* the statistic information display here is based on
         * the last statistics notification from uCode
@@ -1581,10 +1561,8 @@ static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
                return -EAGAIN;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        /* the statistic information display here is based on
         * the last statistics notification from uCode
@@ -1707,16 +1685,11 @@ static ssize_t iwl_dbgfs_ucode_bt_stats_read(struct file *file,
        ret = iwl_send_statistics_request(priv, CMD_SYNC, false);
        mutex_unlock(&priv->mutex);
 
-       if (ret) {
-               IWL_ERR(priv,
-                       "Error sending statistics request: %zd\n", ret);
+       if (ret)
                return -EAGAIN;
-       }
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        /*
         * the statistic information display here is based on
@@ -1793,10 +1766,8 @@ static ssize_t iwl_dbgfs_reply_tx_error_read(struct file *file,
                return -EAGAIN;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");
        pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",
@@ -1936,10 +1907,8 @@ static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
 
        data = &priv->sensitivity_data;
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
                        data->auto_corr_ofdm);
@@ -2017,10 +1986,8 @@ static ssize_t iwl_dbgfs_chain_noise_read(struct file *file,
 
        data = &priv->chain_noise_data;
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(priv, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
                        data->active_chains);

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
index 2a9fb98..e0c93cc 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
@@ -1825,10 +1825,9 @@ static ssize_t iwl_dbgfs_tx_queue_read(struct file *file,
 
        bufsz = sizeof(char) * 64 * trans->cfg->base_params->num_of_queues;
 
-       if (!trans_pcie->txq) {
-               IWL_ERR(trans, "txq not ready\n");
+       if (!trans_pcie->txq)
                return -EAGAIN;
-       }
+
        buf = kzalloc(bufsz, GFP_KERNEL);
        if (!buf)
                return -ENOMEM;
@@ -1889,10 +1888,8 @@ static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
        ssize_t ret;
 
        buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(trans, "Can not allocate Buffer\n");
+       if (!buf)
                return -ENOMEM;
-       }
 
        pos += scnprintf(buf + pos, bufsz - pos,
                        "Interrupt Statistics Report:\n");