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>

5 files changed, 6 insertions, 6 deletions

diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c
index f4ebff968493..7a251b030b7e 100644
--- a/drivers/iio/buffer/industrialio-buffer-cb.c
+++ b/drivers/iio/buffer/industrialio-buffer-cb.c
@@ -60,7 +60,7 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
 		return ERR_PTR(-EINVAL);
 	}
 
-	cb_buff = kzalloc(sizeof(*cb_buff), GFP_KERNEL);
+	cb_buff = kzalloc_obj(*cb_buff, GFP_KERNEL);
 	if (cb_buff == NULL)
 		return ERR_PTR(-ENOMEM);
 
diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index 1c94b334f987..2425e1113a7d 100644
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -174,7 +174,7 @@ iio_dma_buffer_alloc_block(struct iio_dma_buffer_queue *queue, size_t size,
 			   bool fileio)
 {
 	struct iio_dma_buffer_block *block __free(kfree) =
-			kzalloc(sizeof(*block), GFP_KERNEL);
+			kzalloc_obj(*block, GFP_KERNEL);
 	if (!block)
 		return NULL;
 
diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
index 0d3454f4adb0..23b4ac7cca9c 100644
--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -224,7 +224,7 @@ static struct iio_buffer *iio_dmaengine_buffer_alloc(struct dma_chan *chan)
 	if (ret < 0)
 		return ERR_PTR(ret);
 
-	dmaengine_buffer = kzalloc(sizeof(*dmaengine_buffer), GFP_KERNEL);
+	dmaengine_buffer = kzalloc_obj(*dmaengine_buffer, GFP_KERNEL);
 	if (!dmaengine_buffer)
 		return ERR_PTR(-ENOMEM);
 
diff --git a/drivers/iio/buffer/industrialio-hw-consumer.c b/drivers/iio/buffer/industrialio-hw-consumer.c
index 526b2a8d725d..9745b3bd4ac7 100644
--- a/drivers/iio/buffer/industrialio-hw-consumer.c
+++ b/drivers/iio/buffer/industrialio-hw-consumer.c
@@ -60,7 +60,7 @@ static struct hw_consumer_buffer *iio_hw_consumer_get_buffer(
 			return buf;
 	}
 
-	buf = kzalloc(struct_size(buf, scan_mask, mask_longs), GFP_KERNEL);
+	buf = kzalloc_flex(*buf, scan_mask, mask_longs, GFP_KERNEL);
 	if (!buf)
 		return NULL;
 
@@ -87,7 +87,7 @@ struct iio_hw_consumer *iio_hw_consumer_alloc(struct device *dev)
 	struct iio_channel *chan;
 	int ret;
 
-	hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
+	hwc = kzalloc_obj(*hwc, GFP_KERNEL);
 	if (!hwc)
 		return ERR_PTR(-ENOMEM);
 
diff --git a/drivers/iio/buffer/kfifo_buf.c b/drivers/iio/buffer/kfifo_buf.c
index 38034c8bcc04..73e2cd7e7313 100644
--- a/drivers/iio/buffer/kfifo_buf.c
+++ b/drivers/iio/buffer/kfifo_buf.c
@@ -204,7 +204,7 @@ struct iio_buffer *iio_kfifo_allocate(void)
 {
 	struct iio_kfifo *kf;
 
-	kf = kzalloc(sizeof(*kf), GFP_KERNEL);
+	kf = kzalloc_obj(*kf, GFP_KERNEL);
 	if (!kf)
 		return NULL;