Messages in this thread Patch in this message | | | Date | Wed, 15 May 2019 20:16:15 +0800 | From | kbuild test robot <> | Subject | [PATCH] staging: kpc2000: fix alloc_cast.cocci warnings |
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From: kbuild test robot <lkp@intel.com>
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 <Matt.Sickler@daktronics.com> Signed-off-by: kbuild test robot <lkp@intel.com> ---
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;
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