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, replace the following form: sizeof(struct sof_ipc_ctrl_data) + sizeof(struct sof_ipc_ctrl_value_chan) * le32_to_cpu(mc->num_channels) with: struct_size(scontrol->control_data, chanv, le32_to_cpu(mc->num_channels)) and so on... This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx> --- sound/soc/sof/topology.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index c88afa872a58..745cb875863c 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -442,9 +442,8 @@ static int sof_control_load_volume(struct snd_soc_component *scomp, return -EINVAL; /* init the volume get/put data */ - scontrol->size = sizeof(struct sof_ipc_ctrl_data) + - sizeof(struct sof_ipc_ctrl_value_chan) * - le32_to_cpu(mc->num_channels); + scontrol->size = struct_size(scontrol->control_data, chanv, + le32_to_cpu(mc->num_channels)); scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL); if (!scontrol->control_data) return -ENOMEM; @@ -501,9 +500,8 @@ static int sof_control_load_enum(struct snd_soc_component *scomp, return -EINVAL; /* init the enum get/put data */ - scontrol->size = sizeof(struct sof_ipc_ctrl_data) + - sizeof(struct sof_ipc_ctrl_value_chan) * - le32_to_cpu(ec->num_channels); + scontrol->size = struct_size(scontrol->control_data, chanv, + le32_to_cpu(ec->num_channels)); scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL); if (!scontrol->control_data) return -ENOMEM; -- 2.21.0 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
