From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: dmitry.torokhov@gmail.com, gustavo@embeddedor.com,
arvind.yadav.cs@gmail.com
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] input: mouse: appletouch: Replace GFP_ATOMIC with GFP_KERNEL
Date: Fri, 27 Jul 2018 10:26:18 +0800 [thread overview]
Message-ID: <20180727022618.1007-1-baijiaju1990@gmail.com> (raw)
atp_open(), atp_recover() and atp_resume() are never
called in atomic context.
They call usb_submit_urb() 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@gmail.com>
---
drivers/input/mouse/appletouch.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c
index 032d27983b6c..f593ec96c95f 100644
--- a/drivers/input/mouse/appletouch.c
+++ b/drivers/input/mouse/appletouch.c
@@ -810,7 +810,7 @@ static int atp_open(struct input_dev *input)
{
struct atp *dev = input_get_drvdata(input);
- if (usb_submit_urb(dev->urb, GFP_ATOMIC))
+ if (usb_submit_urb(dev->urb, GFP_KERNEL))
return -EIO;
dev->open = true;
@@ -976,7 +976,7 @@ static int atp_recover(struct atp *dev)
if (error)
return error;
- if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
+ if (dev->open && usb_submit_urb(dev->urb, GFP_KERNEL))
return -EIO;
return 0;
@@ -994,7 +994,7 @@ static int atp_resume(struct usb_interface *iface)
{
struct atp *dev = usb_get_intfdata(iface);
- if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
+ if (dev->open && usb_submit_urb(dev->urb, GFP_KERNEL))
return -EIO;
return 0;
--
2.17.0
next reply other threads:[~2018-07-27 2:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-27 2:26 Jia-Ju Bai [this message]
2018-07-27 18:36 ` [PATCH] input: mouse: appletouch: Replace GFP_ATOMIC with GFP_KERNEL Dmitry Torokhov
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