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linux-next/drivers/dma/ioat
Gustavo A. R. Silva 25af5afe77 dmanegine: ioat/dca: Use struct_size() helper
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 ioat_dca_priv {
	...
        struct ioat_dca_slot     req_slots[0];
};

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

So, replace the following form:

sizeof(*ioatdca) + (sizeof(struct ioat_dca_slot) * slots)

with:

struct_size(ioatdca, req_slots, slots)

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20190828184015.GA4273@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-09-04 10:17:14 +05:30
..
dca.c dmanegine: ioat/dca: Use struct_size() helper 2019-09-04 10:17:14 +05:30
dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291 2019-06-05 17:36:38 +02:00
dma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7 2019-05-21 11:28:40 +02:00
hw.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7 2019-05-21 11:28:40 +02:00
init.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291 2019-06-05 17:36:38 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
prep.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291 2019-06-05 17:36:38 +02:00
registers.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7 2019-05-21 11:28:40 +02:00
sysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291 2019-06-05 17:36:38 +02:00