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i3c: master: Use struct_size() helper

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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 the following form:

sizeof(*defslvs) + ((ndevs - 1) * sizeof(struct i3c_ccc_dev_desc))

with:

struct_size(defslvs, slaves, ndevs - 1)

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
This commit is contained in:
Gustavo A. R. Silva 2019-05-31 12:35:32 -05:00 committed by Boris Brezillon
parent ea3bfeec6b
commit ede2001569
1 changed files with 2 additions and 3 deletions
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5
drivers/i3c/master.c
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@ -950,9 +950,8 @@ int i3c_master_defslvs_locked(struct i3c_master_controller *master)
ndevs++;
defslvs = i3c_ccc_cmd_dest_init(&dest, I3C_BROADCAST_ADDR,
sizeof(*defslvs) +
((ndevs - 1) *
sizeof(struct i3c_ccc_dev_desc)));
struct_size(defslvs, slaves,
ndevs - 1));
if (!defslvs)
return -ENOMEM;