linux/drivers/staging/ralink-gdma
Gustavo A. R. Silva e291fa1237 staging: ralink-gdma: Use struct_size() in 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;
    struct boo entry[];
};

size = sizeof(struct foo) + count * sizeof(struct boo);
instance = kzalloc(size, GFP_KERNEL)

Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:

size = struct_size(instance, entry, count);

or

instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL)

Based on the above, replace gdma_dma_alloc_desc() with kzalloc() and
use the new struct_size() helper.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-16 13:44:30 +02:00
..
Kconfig staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
Makefile staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
ralink-gdma.c staging: ralink-gdma: Use struct_size() in kzalloc() 2019-04-16 13:44:30 +02:00