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:
uuid_params->num_modules * sizeof(struct skl_mod_inst_map) + sizeof(uuid_params->num_modules)
with:
struct_size(params, u.map, uuid_params->num_modules)
and so on...
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
sound/soc/intel/skylake/skl-topology.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c
index 389f1862bc43..c69d999d7bf1 100644
--- a/sound/soc/intel/skylake/skl-topology.c
+++ b/sound/soc/intel/skylake/skl-topology.c
@@ -941,9 +941,7 @@ static int skl_tplg_find_moduleid_from_uuid(struct skl *skl,
if (bc->set_params == SKL_PARAM_BIND && bc->max) {
uuid_params = (struct skl_kpb_params *)bc->params;
- size = uuid_params->num_modules *
- sizeof(struct skl_mod_inst_map) +
- sizeof(uuid_params->num_modules);
+ size = struct_size(params, u.map, uuid_params->num_modules);
params = devm_kzalloc(bus->dev, size, GFP_KERNEL);
if (!params)
@@ -3315,7 +3313,7 @@ static int skl_tplg_get_int_tkn(struct device *dev,
struct snd_soc_tplg_vendor_value_elem *tkn_elem,
struct skl *skl)
{
- int tkn_count = 0, ret, size;
+ int tkn_count = 0, ret;
static int mod_idx, res_val_idx, intf_val_idx, dir, pin_idx;
struct skl_module_res *res = NULL;
struct skl_module_iface *fmt = NULL;
@@ -3323,6 +3321,7 @@ static int skl_tplg_get_int_tkn(struct device *dev,
static struct skl_astate_param *astate_table;
static int astate_cfg_idx, count;
int i;
+ size_t size;
if (skl->modules) {
mod = skl->modules[mod_idx];
@@ -3366,8 +3365,8 @@ static int skl_tplg_get_int_tkn(struct device *dev,
return -EINVAL;
}
- size = tkn_elem->value * sizeof(struct skl_astate_param) +
- sizeof(count);
+ size = struct_size(skl->cfg.astate_cfg, astate_table,
+ tkn_elem->value);
skl->cfg.astate_cfg = devm_kzalloc(dev, size, GFP_KERNEL);
if (!skl->cfg.astate_cfg)
return -ENOMEM;
--
2.21.0
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