[PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Hyeonggon Yoo]

probe in usb don't need to be atomic. So GFP_KERNEL can be used here,
instead of GFP_ATOMIC.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
---
 drivers/hid/usbhid/usbmouse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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;
 
-- 
2.25.1

Re: [PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Hyeonggon Yoo]

On Mon, May 24, 2021 at 11:57:43PM +0900, Hyeonggon Yoo wrote:
> probe in usb don't need to be atomic. So GFP_KERNEL can be used here,
> instead of GFP_ATOMIC.
> 
> Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
> ---
>  drivers/hid/usbhid/usbmouse.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> 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;
>  
> -- 
> 2.25.1
> 

Hello for me it was simple and obvious patch.
Is there something wrong about it?

Then please let me know about it!

Thanks,
Hyeonggon

Re: [PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Greg KH]

On Fri, May 28, 2021 at 01:45:17AM +0900, Hyeonggon Yoo wrote:
> On Mon, May 24, 2021 at 11:57:43PM +0900, Hyeonggon Yoo wrote:
> > probe in usb don't need to be atomic. So GFP_KERNEL can be used here,
> > instead of GFP_ATOMIC.
> > 
> > Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
> > ---
> >  drivers/hid/usbhid/usbmouse.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > 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;
> >  
> > -- 
> > 2.25.1
> > 
> 
> Hello for me it was simple and obvious patch.
> Is there something wrong about it?

It has been only 4 days.  For a non-bugfix and for something that is
only a "cleanup" change, give it at least 2 weeks please.

Relax, there is no rush for stuff like this.

thanks,

greg k-h

Re: [PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Hyeonggon Yoo]

On Thu, May 27, 2021 at 06:54:07PM +0200, Greg KH wrote:
> It has been only 4 days.  For a non-bugfix and for something that is
> only a "cleanup" change, give it at least 2 weeks please.
> 
> Relax, there is no rush for stuff like this.

Hello Greg!

Okay You are right. I'll relax...

I think I need to be familiar with the process :)

Thank you!
Hyeonggon

Re: [PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Greg KH]

On Fri, May 28, 2021 at 02:05:36AM +0900, Hyeonggon Yoo wrote:
> On Thu, May 27, 2021 at 06:54:07PM +0200, Greg KH wrote:
> > It has been only 4 days.  For a non-bugfix and for something that is
> > only a "cleanup" change, give it at least 2 weeks please.
> > 
> > Relax, there is no rush for stuff like this.
> 
> Hello Greg!
> 
> Okay You are right. I'll relax...
> 
> I think I need to be familiar with the process :)

Please go read Documentation/process/ for all of that while you wait :)

Re: [PATCH] HID: usbmouse: Avoid GFP_ATOMIC when GFP_KERNEL is possible

[Hyeonggon Yoo]

On Thu, May 27, 2021 at 07:11:24PM +0200, Greg KH wrote:
> On Fri, May 28, 2021 at 02:05:36AM +0900, Hyeonggon Yoo wrote:
> > On Thu, May 27, 2021 at 06:54:07PM +0200, Greg KH wrote:
> > > It has been only 4 days.  For a non-bugfix and for something that is
> > > only a "cleanup" change, give it at least 2 weeks please.
> > > 
> > > Relax, there is no rush for stuff like this.
> > 
> > Hello Greg!
> > 
> > Okay You are right. I'll relax...
> > 
> > I think I need to be familiar with the process :)
> 
> Please go read Documentation/process/ for all of that while you wait :)

I'm reading it and Thanks for letting me know it.
it helps a lot... I should read it many times.

and the patch seems already applied to linux-next :)

Thanks,
Hyeonggon