From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jia-Ju Bai Subject: [PATCH] input: misc: powermate: Replace GFP_ATOMIC with GFP_KERNEL in powermate_alloc_buffers() Date: Fri, 27 Jul 2018 10:17:23 +0800 Message-ID: <20180727021723.709-1-baijiaju1990@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: dmitry.torokhov@gmail.com, arvind.yadav.cs@gmail.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Jia-Ju Bai List-Id: linux-input@vger.kernel.org powermate_alloc_buffers() is never called in atomic context. It calls usb_alloc_coherent() 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 --- drivers/input/misc/powermate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c index 5c8c79623c87..e8de3aaf9f63 100644 --- a/drivers/input/misc/powermate.c +++ b/drivers/input/misc/powermate.c @@ -277,7 +277,7 @@ static int powermate_input_event(struct input_dev *dev, unsigned int type, unsig static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_device *pm) { pm->data = usb_alloc_coherent(udev, POWERMATE_PAYLOAD_SIZE_MAX, - GFP_ATOMIC, &pm->data_dma); + GFP_KERNEL, &pm->data_dma); if (!pm->data) return -1; -- 2.17.0