Re: [Patch v2] staging: rtl8723bs: os_dep: ioctl_linux: make use of kzalloc

From: Dan Carpenter
Date: Tue Jun 18 2019 - 05:01:11 EST

On Tue, Jun 18, 2019 at 07:14:10AM +0530, Hariprasad Kelam wrote:
> kmalloc with memset can be replaced with kzalloc.
> Signed-off-by: Hariprasad Kelam <hariprasad.kelam@xxxxxxxxx>
> -----
> changes in v2: Replace rtw_zmalloc with kzalloc
> ---
> ---

The changelog should say something like:

This patch is a cleanup which replaces rtw_malloc(wep_total_len)
with kzalloc() and removes the memset().

The rtw_malloc() does GFP_ATOMIC allocations when in_atomic() is true.
But as the comments for in_atomic() describe, the in_atomic() check
should not be used in driver code. The in_atomic() check is not
accurate when preempt is disabled.

In this code we are not in IRQ context and we are not holding any
spin_locks so GFP_KERNEL is safe.

dan carpenter