linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH] HID: usbhid: Use GFP_KERNEL instead of GFP_ATOMIC when applicable
@ 2019-08-01  7:47 Christophe JAILLET
  2019-08-01 10:06 ` walter harms
  0 siblings, 1 reply; 4+ messages in thread
From: Christophe JAILLET @ 2019-08-01  7:47 UTC (permalink / raw)
  To: jikos, benjamin.tissoires
  Cc: linux-usb, linux-input, linux-kernel, kernel-janitors,
	Christophe JAILLET

There is no need to use GFP_ATOMIC when calling 'usb_alloc_coherent()'
here. These calls are done from probe functions and using GFP_KERNEL should
be safe.
The memory itself is used within some interrupts, but it is not a
problem, once it has been allocated.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/hid/usbhid/usbkbd.c   | 4 ++--
 drivers/hid/usbhid/usbmouse.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index d5b7a696a68c..63e8ef8beb45 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;
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index 073127e65ac1..c89332017d5d 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -130,7 +130,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 	if (!mouse || !input_dev)
 		goto fail1;
 
-	mouse->data = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &mouse->data_dma);
+	mouse->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &mouse->data_dma);
 	if (!mouse->data)
 		goto fail1;
 
-- 
2.20.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2019-08-02  7:51 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-01  7:47 [PATCH] HID: usbhid: Use GFP_KERNEL instead of GFP_ATOMIC when applicable Christophe JAILLET
2019-08-01 10:06 ` walter harms
2019-08-01 13:47   ` Greg KH
2019-08-02  7:51   ` Christophe JAILLET

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).