linux-kernel - [PATCH] isdn: hisax: callc: Replace GFP_ATOMIC with GFP_KERNEL in init

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Message-Id: <20180727024530.1849-1-baijiaju1990@gmail.com>
Date:   Fri, 27 Jul 2018 10:45:30 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     isdn@...ux-pingi.de
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] isdn: hisax: callc: Replace GFP_ATOMIC with GFP_KERNEL in init_PStack()

init_PStack() is never called in atomic context.
It calls kmalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
---
 drivers/isdn/hisax/callc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/isdn/hisax/callc.c b/drivers/isdn/hisax/callc.c
index ddec47a911a0..0faecb723f13 100644
--- a/drivers/isdn/hisax/callc.c
+++ b/drivers/isdn/hisax/callc.c
@@ -1012,7 +1012,7 @@ dummy_pstack(struct PStack *st, int pr, void *arg) {
 
 static int
 init_PStack(struct PStack **stp) {
-	*stp = kmalloc(sizeof(struct PStack), GFP_ATOMIC);
+	*stp = kmalloc(sizeof(struct PStack), GFP_KERNEL);
 	if (!*stp)
 		return -ENOMEM;
 	(*stp)->next = NULL;
-- 
2.17.0