From: kbuild test robot <[email protected]>
drivers/staging/kpc2000/kpc_dma/fileops.c:60:8-26: WARNING: casting value
returned by memory allocation function to (struct aio_cb_data *) is useless.
Remove casting the values returned by memory allocation functions
like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.
Semantic patch information:
This makes an effort to find cases of casting of values returned by
kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
the casting as it is not required. The result in the patch case may
need some reformatting.
Generated by: scripts/coccinelle/api/alloc/alloc_cast.cocci
Fixes: 7df95299b94a ("staging: kpc2000: Add DMA driver")
CC: Matt Sickler <[email protected]>
Signed-off-by: kbuild test robot <[email protected]>
---
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 5ac94332248ee017964ba368cdda4ce647e3aba7
commit: 7df95299b94a63ec67a6389fc02dc25019a80ee8 staging: kpc2000: Add DMA
driver
fileops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/kpc2000/kpc_dma/fileops.c
+++ b/drivers/staging/kpc2000/kpc_dma/fileops.c
@@ -57,7 +57,7 @@ int kpc_dma_transfer(struct dev_private
dev_dbg(&priv->ldev->pldev->dev, "kpc_dma_transfer(priv = [%p], kcb =
[%p], iov_base = [%p], iov_len = %ld) ldev = [%p]\n", priv, kcb,
(void*)iov_base, iov_len, ldev);
- acd = (struct aio_cb_data *) kzalloc(sizeof(struct aio_cb_data),
GFP_KERNEL);
+ acd = kzalloc(sizeof(struct aio_cb_data), GFP_KERNEL);
if (!acd){
dev_err(&priv->ldev->pldev->dev, "Couldn't kmalloc space for
for the aio data\n");
return -ENOMEM;
