From: Jia-Ju Bai <baijiaju1990@gmail.com>
Date: Wed, 11 Apr 2018 15:33:06 +0800
Subject: infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in
 i40iw_l2param_change
Patch-mainline: v4.18-rc1
Git-commit: 4e56569cee1505846b3dcb15fbf400f6a7e9f015
References: bsc#1114687 FATE#326314

i40iw_l2param_change() is never called in atomic context.

i40iw_make_listen_node() is only set as ".l2_param_change"
in struct i40e_client_ops, and this function pointer is not called
in atomic context.

Despite never getting called from atomic context,
i40iw_l2param_change() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/i40iw/i40iw_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/hw/i40iw/i40iw_main.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_main.c
@@ -1757,7 +1757,7 @@ static void i40iw_l2param_change(struct
 		return;
 
 
-	work = kzalloc(sizeof(*work), GFP_ATOMIC);
+	work = kzalloc(sizeof(*work), GFP_KERNEL);
 	if (!work)
 		return;