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ASoC: Intel: Skylake: 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, 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@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2019-05-23 17:23:33 -05:00 committed by Mark Brown
parent 07597910a9
commit d00cc2f16a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 6 deletions
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11
sound/soc/intel/skylake/skl-topology.c
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@ -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;