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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-01-04 23:55:27 -0600
committerLinus Walleij <linus.walleij@linaro.org>2019-01-11 13:33:00 +0100
commit21face6f0d4d033d949d5517f307a15f76a9d9f2 (patch)
tree8a6410cd65f28fa27cd94e7662602376c1b7d603
parentdf209c43a0e8258e096fb722dfbdae4f0dd13fde (diff)
downloadlinux-0-day-21face6f0d4d033d949d5517f307a15f76a9d9f2.tar.gz
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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 0f916c2..8dfad01 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,