treewide: Replace kmalloc with kmalloc_obj for non-scalar types

This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 09f518897d4a..0d4043797e4c 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -50,7 +50,7 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
 		return -EINVAL;
 
 	struct input_mt *mt __free(kfree) =
-			kzalloc(struct_size(mt, slots, num_slots), GFP_KERNEL);
+			kzalloc_flex(*mt, slots, num_slots, GFP_KERNEL);
 	if (!mt)
 		return -ENOMEM;
 
@@ -84,7 +84,7 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
 		__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
 	if (flags & INPUT_MT_TRACK) {
 		unsigned int n2 = num_slots * num_slots;
-		mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);
+		mt->red = kzalloc_objs(*mt->red, n2, GFP_KERNEL);
 		if (!mt->red)
 			return -ENOMEM;
 	}