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ASoC: qdsp6: q6core: Use struct_size() in kmemdup()

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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 code of the following form:

sizeof(*fwk) + fwk->num_services * sizeof(fwk->svc_api_info[0]);

with:

struct_size(fwk, svc_api_info, fwk->num_services)

and so on...

Notice that variables bytes and len are unnecessary, hence they are
removed.

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 11:07:48 -05:00 committed by Mark Brown
parent d00cc2f16a
commit e718a3eb09
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 8 deletions
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16
sound/soc/qcom/qdsp6/q6core.c
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@ -98,13 +98,13 @@ static int q6core_callback(struct apr_device *adev, struct apr_resp_pkt *data)
}
case AVCS_CMDRSP_GET_FWK_VERSION: {
struct avcs_cmdrsp_get_fwk_version *fwk;
int bytes;
fwk = data->payload;
bytes = sizeof(*fwk) + fwk->num_services *
sizeof(fwk->svc_api_info[0]);
core->fwk_version = kmemdup(data->payload, bytes, GFP_ATOMIC);
core->fwk_version = kmemdup(data->payload,
struct_size(fwk, svc_api_info,
fwk->num_services),
GFP_ATOMIC);
if (!core->fwk_version)
return -ENOMEM;
@ -115,13 +115,13 @@ static int q6core_callback(struct apr_device *adev, struct apr_resp_pkt *data)
}
case AVCS_GET_VERSIONS_RSP: {
struct avcs_cmdrsp_get_version *v;
int len;
v = data->payload;
len = sizeof(*v) + v->num_services * sizeof(v->svc_api_info[0]);
core->svc_version = kmemdup(data->payload, len, GFP_ATOMIC);
core->svc_version = kmemdup(data->payload,
struct_size(v, svc_api_info,
v->num_services),
GFP_ATOMIC);
if (!core->svc_version)
return -ENOMEM;