Re: [PATCH net-next] liquidio: Remove unneeded cast from memory allocation

[Joe Perches]

On Tue, 2020-07-28 at 21:38 +0800, wanghai (M) wrote:
> Thanks for your explanation. I got it.
> 
> Can it be modified like this?
[]
> +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
> @@ -1152,11 +1152,8 @@ octeon_register_dispatch_fn(struct octeon_device 
> *oct,
> 
>                  dev_dbg(&oct->pci_dev->dev,
>                          "Adding opcode to dispatch list linked list\n");
> -               dispatch = (struct octeon_dispatch *)
> -                          vmalloc(sizeof(struct octeon_dispatch));
> +               dispatch = kmalloc(sizeof(struct octeon_dispatch), 
> GFP_KERNEL);
>                  if (!dispatch) {
> -                       dev_err(&oct->pci_dev->dev,
> -                               "No memory to add dispatch function\n");
>                          return 1;
>                  }
>                  dispatch->opcode = combined_opcode;

Yes, but the free also needs to be changed.

I think it's:
---
 drivers/net/ethernet/cavium/liquidio/octeon_device.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c 
b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
index 934115d18488..4ee4cb946e1d 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
@@ -1056,7 +1056,7 @@ void octeon_delete_dispatch_list(struct octeon_device 
*oct)
 
        list_for_each_safe(temp, tmp2, &freelist) {
                list_del(temp);
-               vfree(temp);
+               kfree(temp);
        }
 }
 
@@ -1152,13 +1152,10 @@ octeon_register_dispatch_fn(struct octeon_device *oct,
 
                dev_dbg(&oct->pci_dev->dev,
                        "Adding opcode to dispatch list linked list\n");
-               dispatch = (struct octeon_dispatch *)
-                          vmalloc(sizeof(struct octeon_dispatch));
-               if (!dispatch) {
-                       dev_err(&oct->pci_dev->dev,
-                               "No memory to add dispatch function\n");
+               dispatch = kmalloc(sizeof(struct octeon_dispatch), GFP_KERNEL);
+               if (!dispatch)
                        return 1;
-               }
+
                dispatch->opcode = combined_opcode;
                dispatch->dispatch_fn = fn;
                dispatch->arg = fn_arg;