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| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-01-05 06:55:27 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-01-11 13:33:00 +0100 |
| commit | 21face6f0d4d033d949d5517f307a15f76a9d9f2 (patch) | |
| tree | 8a6410cd65f28fa27cd94e7662602376c1b7d603 | |
| parent | gpio: pl061: handle failed allocations (diff) | |
| download | linux-21face6f0d4d033d949d5517f307a15f76a9d9f2.tar.xz linux-21face6f0d4d033d949d5517f307a15f76a9d9f2.zip | |
ARM: integrator: impd1: use struct_size() in devm_kzalloc()
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. For example:
struct foo {
int stuff;
void *entry[];
};
instance = devm_kzalloc(dev, sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = devm_kzalloc(dev, struct_size(instance, entry, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
| -rw-r--r-- | arch/arm/mach-integrator/impd1.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c index 0f916c245a2e..8dfad012dfae 100644 --- a/arch/arm/mach-integrator/impd1.c +++ b/arch/arm/mach-integrator/impd1.c @@ -390,7 +390,7 @@ static int __ref impd1_probe(struct lm_device *dev) char *mmciname; lookup = devm_kzalloc(&dev->dev, - sizeof(*lookup) + 3 * sizeof(struct gpiod_lookup), + struct_size(lookup, table, 3), GFP_KERNEL); chipname = devm_kstrdup(&dev->dev, devname, GFP_KERNEL); mmciname = devm_kasprintf(&dev->dev, GFP_KERNEL, |