[PATCH 2/2] mwifiex: use 'total_ie_len' in mwifiex_update_bss_desc_with_ie()

From: Brian Norris
Date: Fri Jun 14 2019 - 20:18:48 EST


This is clearer than copy/pasting the magic number '+ 2' around, and it
even saves the need for one existing comment.

Cc: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Brian Norris <briannorris@xxxxxxxxxxxx>
---
drivers/net/wireless/marvell/mwifiex/scan.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/scan.c b/drivers/net/wireless/marvell/mwifiex/scan.c
index e2786ab612ca..707e5159262f 100644
--- a/drivers/net/wireless/marvell/mwifiex/scan.c
+++ b/drivers/net/wireless/marvell/mwifiex/scan.c
@@ -1269,7 +1269,7 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
break;

case WLAN_EID_FH_PARAMS:
- if (element_len + 2 < sizeof(*fh_param_set))
+ if (total_ie_len < sizeof(*fh_param_set))
return -EINVAL;
fh_param_set =
(struct ieee_types_fh_param_set *) current_ptr;
@@ -1279,7 +1279,7 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
break;

case WLAN_EID_DS_PARAMS:
- if (element_len + 2 < sizeof(*ds_param_set))
+ if (total_ie_len < sizeof(*ds_param_set))
return -EINVAL;
ds_param_set =
(struct ieee_types_ds_param_set *) current_ptr;
@@ -1292,7 +1292,7 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
break;

case WLAN_EID_CF_PARAMS:
- if (element_len + 2 < sizeof(*cf_param_set))
+ if (total_ie_len < sizeof(*cf_param_set))
return -EINVAL;
cf_param_set =
(struct ieee_types_cf_param_set *) current_ptr;
@@ -1302,7 +1302,7 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
break;

case WLAN_EID_IBSS_PARAMS:
- if (element_len + 2 < sizeof(*ibss_param_set))
+ if (total_ie_len < sizeof(*ibss_param_set))
return -EINVAL;
ibss_param_set =
(struct ieee_types_ibss_param_set *)
@@ -1459,10 +1459,8 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
break;
}

- current_ptr += element_len + 2;
-
- /* Need to account for IE ID and IE Len */
- bytes_left -= (element_len + 2);
+ current_ptr += total_ie_len;
+ bytes_left -= total_ie_len;

} /* while (bytes_left > 2) */
return ret;
--
2.22.0.410.gd8fdbe21b5-goog