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iwlwifi: mvm: no need to check return value of debugfs_create functions

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When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Luca Coelho <luciano.coelho@intel.com>
Cc: Intel Linux Wireless <linuxwifi@intel.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Greg Kroah-Hartman 2019-01-22 16:21:23 +01:00 committed by Luca Coelho
parent 3f7fbc8cc1
commit c9af7528c3
5 changed files with 38 additions and 95 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
View File

@ -743,9 +743,8 @@ static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
if (!debugfs_create_file(#name, mode, parent, vif, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
debugfs_create_file(#name, mode, parent, vif, \
&iwl_dbgfs_##name##_ops); \
} while (0)
MVM_DEBUGFS_READ_FILE_OPS(mac_params);
@ -775,12 +774,6 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
if (!mvmvif->dbgfs_dir) {
IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
dbgfs_dir);
return;
}
if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
(vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
@ -812,12 +805,6 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
mvm->debugfs_dir, buf);
if (!mvmvif->dbgfs_slink)
IWL_ERR(mvm, "Can't create debugfs symbolic link under %pd\n",
dbgfs_dir);
return;
err:
IWL_ERR(mvm, "Can't create debugfs entity\n");
}
void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)

89
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
View File

@ -1696,9 +1696,8 @@ static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf,
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
#define MVM_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \
if (!debugfs_create_file(alias, mode, parent, mvm, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
debugfs_create_file(alias, mode, parent, mvm, \
&iwl_dbgfs_##name##_ops); \
} while (0)
#define MVM_DEBUGFS_ADD_FILE(name, parent, mode) \
MVM_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
@ -1709,9 +1708,8 @@ static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf,
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_sta)
#define MVM_DEBUGFS_ADD_STA_FILE_ALIAS(alias, name, parent, mode) do { \
if (!debugfs_create_file(alias, mode, parent, sta, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
debugfs_create_file(alias, mode, parent, sta, \
&iwl_dbgfs_##name##_ops); \
} while (0)
#define MVM_DEBUGFS_ADD_STA_FILE(name, parent, mode) \
MVM_DEBUGFS_ADD_STA_FILE_ALIAS(#name, name, parent, mode)
@ -2092,13 +2090,9 @@ void iwl_mvm_sta_add_debugfs(struct ieee80211_hw *hw,
if (iwl_mvm_has_tlc_offload(mvm))
MVM_DEBUGFS_ADD_STA_FILE(rs_data, dir, 0400);
return;
err:
IWL_ERR(mvm, "Can't create the mvm station debugfs entry\n");
}
int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
{
struct dentry *bcast_dir __maybe_unused;
char buf[100];
@ -2142,14 +2136,10 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
#endif
MVM_DEBUGFS_ADD_FILE(he_sniffer_params, mvm->debugfs_dir, 0600);
if (!debugfs_create_bool("enable_scan_iteration_notif",
0600,
mvm->debugfs_dir,
&mvm->scan_iter_notif_enabled))
goto err;
if (!debugfs_create_bool("drop_bcn_ap_mode", 0600,
mvm->debugfs_dir, &mvm->drop_bcn_ap_mode))
goto err;
debugfs_create_bool("enable_scan_iteration_notif", 0600,
mvm->debugfs_dir, &mvm->scan_iter_notif_enabled);
debugfs_create_bool("drop_bcn_ap_mode", 0600, mvm->debugfs_dir,
&mvm->drop_bcn_ap_mode);
MVM_DEBUGFS_ADD_FILE(uapsd_noagg_bssids, mvm->debugfs_dir, S_IRUSR);
@ -2157,13 +2147,9 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {
bcast_dir = debugfs_create_dir("bcast_filtering",
mvm->debugfs_dir);
if (!bcast_dir)
goto err;
if (!debugfs_create_bool("override", 0600,
bcast_dir,
&mvm->dbgfs_bcast_filtering.override))
goto err;
debugfs_create_bool("override", 0600, bcast_dir,
&mvm->dbgfs_bcast_filtering.override);
MVM_DEBUGFS_ADD_FILE_ALIAS("filters", bcast_filters,
bcast_dir, 0600);
@ -2175,35 +2161,26 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
#ifdef CONFIG_PM_SLEEP
MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, 0600);
MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, 0400);
if (!debugfs_create_bool("d3_wake_sysassert", 0600,
mvm->debugfs_dir, &mvm->d3_wake_sysassert))
goto err;
if (!debugfs_create_u32("last_netdetect_scans", 0400,
mvm->debugfs_dir, &mvm->last_netdetect_scans))
goto err;
debugfs_create_bool("d3_wake_sysassert", 0600, mvm->debugfs_dir,
&mvm->d3_wake_sysassert);
debugfs_create_u32("last_netdetect_scans", 0400, mvm->debugfs_dir,
&mvm->last_netdetect_scans);
#endif
if (!debugfs_create_u8("ps_disabled", 0400,
mvm->debugfs_dir, &mvm->ps_disabled))
goto err;
if (!debugfs_create_blob("nvm_hw", 0400,
mvm->debugfs_dir, &mvm->nvm_hw_blob))
goto err;
if (!debugfs_create_blob("nvm_sw", 0400,
mvm->debugfs_dir, &mvm->nvm_sw_blob))
goto err;
if (!debugfs_create_blob("nvm_calib", 0400,
mvm->debugfs_dir, &mvm->nvm_calib_blob))
goto err;
if (!debugfs_create_blob("nvm_prod", 0400,
mvm->debugfs_dir, &mvm->nvm_prod_blob))
goto err;
if (!debugfs_create_blob("nvm_phy_sku", 0400,
mvm->debugfs_dir, &mvm->nvm_phy_sku_blob))
goto err;
if (!debugfs_create_blob("nvm_reg", S_IRUSR,
mvm->debugfs_dir, &mvm->nvm_reg_blob))
goto err;
debugfs_create_u8("ps_disabled", 0400, mvm->debugfs_dir,
&mvm->ps_disabled);
debugfs_create_blob("nvm_hw", 0400, mvm->debugfs_dir,
&mvm->nvm_hw_blob);
debugfs_create_blob("nvm_sw", 0400, mvm->debugfs_dir,
&mvm->nvm_sw_blob);
debugfs_create_blob("nvm_calib", 0400, mvm->debugfs_dir,
&mvm->nvm_calib_blob);
debugfs_create_blob("nvm_prod", 0400, mvm->debugfs_dir,
&mvm->nvm_prod_blob);
debugfs_create_blob("nvm_phy_sku", 0400, mvm->debugfs_dir,
&mvm->nvm_phy_sku_blob);
debugfs_create_blob("nvm_reg", S_IRUSR,
mvm->debugfs_dir, &mvm->nvm_reg_blob);
debugfs_create_file("mem", 0600, dbgfs_dir, mvm, &iwl_dbgfs_mem_ops);
@ -2212,11 +2189,5 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
* exists (before the opmode exists which removes the target.)
*/
snprintf(buf, 100, "../../%pd2", dbgfs_dir->d_parent);
if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
goto err;
return 0;
err:
IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
return -ENOMEM;
debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf);
}

7
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -1786,14 +1786,13 @@ void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
/* MVM debugfs */
#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir);
void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir);
void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
#else
static inline int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm,
struct dentry *dbgfs_dir)
static inline void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm,
struct dentry *dbgfs_dir)
{
return 0;
}
static inline void
iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)

12
drivers/net/wireless/intel/iwlwifi/mvm/ops.c
View File

@ -862,9 +862,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
min_backoff = iwl_mvm_min_backoff(mvm);
iwl_mvm_thermal_initialize(mvm, min_backoff);
err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
if (err)
goto out_unregister;
iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
if (!iwl_mvm_has_new_rx_stats_api(mvm))
memset(&mvm->rx_stats_v3, 0,
@ -881,14 +879,6 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
return op_mode;
out_unregister:
if (iwlmvm_mod_params.init_dbg)
return op_mode;
ieee80211_unregister_hw(mvm->hw);
mvm->hw_registered = false;
iwl_mvm_leds_exit(mvm);
iwl_mvm_thermal_exit(mvm);
out_free:
iwl_fw_flush_dump(&mvm->fwrt);
iwl_fw_runtime_free(&mvm->fwrt);

8
drivers/net/wireless/intel/iwlwifi/mvm/rs.c
View File

@ -4078,9 +4078,8 @@ static ssize_t iwl_dbgfs_ss_force_write(struct iwl_lq_sta *lq_sta, char *buf,
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_lq_sta)
#define MVM_DEBUGFS_ADD_FILE_RS(name, parent, mode) do { \
if (!debugfs_create_file(#name, mode, parent, lq_sta, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
debugfs_create_file(#name, mode, parent, lq_sta, \
&iwl_dbgfs_##name##_ops); \
} while (0)
MVM_DEBUGFS_READ_WRITE_FILE_OPS(ss_force, 32);
@ -4108,9 +4107,6 @@ static void rs_drv_add_sta_debugfs(void *mvm, void *priv_sta,
&lq_sta->pers.dbg_fixed_txp_reduction);
MVM_DEBUGFS_ADD_FILE_RS(ss_force, dir, 0600);
return;
err:
IWL_ERR((struct iwl_mvm *)mvm, "Can't create debugfs entity\n");
}
void rs_remove_sta_debugfs(void *mvm, void *mvm_sta)