linux-kernel - Re: [PATCH] drm/crc-debugfs: fix crtc_crc_poll()'s return type

Open Source and information security mailing list archives

Date:   Wed, 20 Nov 2019 12:21:03 +0200
From:   Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     linux-kernel@...r.kernel.org, David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, Sean Paul <sean@...rly.run>
Subject: Re: [PATCH] drm/crc-debugfs: fix crtc_crc_poll()'s return type

On Wed, Nov 20, 2019 at 01:07:54AM +0100, Luc Van Oostenryck wrote:
> crtc_crc_poll() is defined as returning 'unsigned int' but the
> .poll method is declared as returning '__poll_t', a bitwise type.
> 
> Fix this by using the proper return type and using the EPOLL
> constants instead of the POLL ones, as required for __poll_t.

Already fixed. 1ab2a99edb37 ("drm: Fix return type of crc .poll()")

> 
> CC: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> CC: Maxime Ripard <mripard@...nel.org>
> CC: Sean Paul <sean@...rly.run>
> CC: David Airlie <airlied@...ux.ie>
> CC: Daniel Vetter <daniel@...ll.ch>
> CC: dri-devel@...ts.freedesktop.org
> Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
> ---
>  drivers/gpu/drm/drm_debugfs_crc.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
> index be1b7ba92ffe..0bb0aa0ebbca 100644
> --- a/drivers/gpu/drm/drm_debugfs_crc.c
> +++ b/drivers/gpu/drm/drm_debugfs_crc.c
> @@ -334,17 +334,17 @@ static ssize_t crtc_crc_read(struct file *filep, char __user *user_buf,
>  	return LINE_LEN(crc->values_cnt);
>  }
>  
> -static unsigned int crtc_crc_poll(struct file *file, poll_table *wait)
> +static __poll_t crtc_crc_poll(struct file *file, poll_table *wait)
>  {
>  	struct drm_crtc *crtc = file->f_inode->i_private;
>  	struct drm_crtc_crc *crc = &crtc->crc;
> -	unsigned ret;
> +	__poll_t ret;
>  
>  	poll_wait(file, &crc->wq, wait);
>  
>  	spin_lock_irq(&crc->lock);
>  	if (crc->source && crtc_crc_data_count(crc))
> -		ret = POLLIN | POLLRDNORM;
> +		ret = EPOLLIN | EPOLLRDNORM;
>  	else
>  		ret = 0;
>  	spin_unlock_irq(&crc->lock);
> -- 
> 2.24.0
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel

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