From: Gustavo A. R. Silva Date: Wed, 3 Apr 2019 16:03:42 +0000 (-0500) Subject: iwlwifi: d3: Use struct_size() helper X-Git-Tag: v5.3-rc1~140^2~52^2~1^2~24 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e344896723562d1288ba76cc8f232718b9a435f7;p=thirdparty%2Fkernel%2Flinux.git iwlwifi: d3: Use struct_size() helper Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes, in particular in the context in which this code is being used. So, change the following form: sizeof(*pattern_cmd) + wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern) to : struct_size(pattern_cmd, patterns, wowlan->n_patterns) This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index e7e68fb2bd29a..55f73184ee0c1 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -398,8 +398,7 @@ static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, if (!wowlan->n_patterns) return 0; - cmd.len[0] = sizeof(*pattern_cmd) + - wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v1); + cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); if (!pattern_cmd)