linux-kernel - [PATCH] HID: usbkbd: Avoid GFP_ATOMIC when GFP

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Message-ID: <20210529100357.GA46765@hyeyoo>
Date:   Sat, 29 May 2021 19:03:57 +0900
From:   Hyeonggon Yoo <42.hyeyoo@...il.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-usb@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] HID: usbkbd: Avoid GFP_ATOMIC when GFP_KERNEL is possible

usb_kbd_alloc_mem is called in usb_kbd_probe, which is
not in atomic context. So constraints can be relaxed here.

Use GFP_KERNEL instead of GFP_ATOMIC.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
---
 drivers/hid/usbhid/usbkbd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index e22434dfc9ef..df02002066ce 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -239,11 +239,11 @@ static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
 		return -1;
 	if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
 		return -1;
-	if (!(kbd->new = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
+	if (!(kbd->new = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbd->new_dma)))
 		return -1;
 	if (!(kbd->cr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL)))
 		return -1;
-	if (!(kbd->leds = usb_alloc_coherent(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
+	if (!(kbd->leds = usb_alloc_coherent(dev, 1, GFP_KERNEL, &kbd->leds_dma)))
 		return -1;
 
 	return 0;
-- 
2.25.1