linux-kernel - Re: [PATCH] HID: nvidia-shield: Add missing check for input_ff_create

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Message-ID: <ni3q5ljxabdwpirypkh6ahuqsn2iqf3r2jpoa65xt5vlu6rmmz@dcw245bem3o6>
Date: Wed, 15 May 2024 17:48:15 +0200
From: Benjamin Tissoires <bentiss@...nel.org>
To: Rahul Rameshbabu <rrameshbabu@...dia.com>
Cc: Chen Ni <nichen@...as.ac.cn>, jikos@...nel.org, 
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: nvidia-shield: Add missing check for
 input_ff_create_memless

On May 15 2024, Rahul Rameshbabu wrote:
> 
> On Wed, 15 May, 2024 11:30:51 +0800 Chen Ni <nichen@...as.ac.cn> wrote:
> > Add check for the return value of input_ff_create_memless() and return
> > the error if it fails in order to catch the error.
> >
> 
> You will need a Fixes: tag here.
> 
> Fixes: 09308562d4af ("HID: nvidia-shield: Initial driver implementation with Thunderstrike support")
> > Signed-off-by: Chen Ni <nichen@...as.ac.cn>
> > ---
> >  drivers/hid/hid-nvidia-shield.c | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c
> > index 58b15750dbb0..ff9078ad1961 100644
> > --- a/drivers/hid/hid-nvidia-shield.c
> > +++ b/drivers/hid/hid-nvidia-shield.c
> > @@ -283,7 +283,9 @@ static struct input_dev *shield_haptics_create(
> >  		return haptics;
> >  
> >  	input_set_capability(haptics, EV_FF, FF_RUMBLE);
> > -	input_ff_create_memless(haptics, NULL, play_effect);
> > +	ret = input_ff_create_memless(haptics, NULL, play_effect);
> > +	if (ret)
> > +		goto err;
> >  
> >  	ret = input_register_device(haptics);
> >  	if (ret)
> 
> I applied and tested the patch locally, and it looked good. If Jiri or
> Benjamin can apply the patch with the updated trailer, then you can add
> my Reviewed-by: trailer.
> 
> Reviewed-by: Rahul Rameshbabu <rrameshbabu@...dia.com>


Thanks a lot for the patch and the review.

I wanted to apply it but we have a regression upstream on the CI because
of an unrelated change in selftests:
https://gitlab.freedesktop.org/bentiss/hid/-/jobs/58744845

Once this is sorted out I'll apply the patch (or Jiri will). FWIW, b4
applies the Fixes tag all by itself, so I don't have extra steps to do
:)

Cheers,
Benjamin