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platform/x86: i2c-multi-instantiate: Use struct_size() helper

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One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array.

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Andy Shevchenko 2019-07-25 22:05:50 +03:00
parent aaed5c9c2a
commit c03f282e50
1 changed files with 1 additions and 3 deletions
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4
drivers/platform/x86/i2c-multi-instantiate.c
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@ -81,9 +81,7 @@ static int i2c_multi_inst_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
multi = devm_kmalloc(dev,
offsetof(struct i2c_multi_inst_data, clients[ret]),
GFP_KERNEL);
multi = devm_kmalloc(dev, struct_size(multi, clients, ret), GFP_KERNEL);
if (!multi)
return -ENOMEM;