[PATCH 2/2] iwlwifi: Use struct_size() in kzalloc
From: YueHaibing <hidden>
Date: 2019-01-28 06:50:16
Also in:
linux-wireless, lkml
Subsystem:
intel wireless wifi link (iwlwifi), the rest · Maintainers:
Miri Korenblit, Linus Torvalds
Use struct_size() in kzalloc instead of the 'regd_to_copy' Signed-off-by: YueHaibing <redacted> --- drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index 569cc50..cb9e722 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c@@ -1093,7 +1093,7 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, const u8 *nvm_chan = cfg->nvm_type == IWL_NVM_EXT ? iwl_ext_nvm_channels : iwl_nvm_channels; struct ieee80211_regdomain *regd, *copy_rd; - int size_of_regd, regd_to_copy; + int size_of_regd; struct ieee80211_reg_rule *rule; struct regdb_ptrs *regdb_ptrs; enum nl80211_band band;
@@ -1193,10 +1193,8 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, * Narrow down regdom for unused regulatory rules to prevent hole * between reg rules to wmm rules. */ - regd_to_copy = sizeof(struct ieee80211_regdomain) + - valid_rules * sizeof(struct ieee80211_reg_rule); - - copy_rd = kmemdup(regd, regd_to_copy, GFP_KERNEL); + copy_rd = kmemdup(regd, struct_size(regd, reg_rules, valid_rules), + GFP_KERNEL); if (!copy_rd) copy_rd = ERR_PTR(-ENOMEM);
--
2.7.4