linux-kernel - Re: [PATCH 1/1] staging: android: Fix warning cast removes address space of expression

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Date:	Fri, 25 Apr 2014 15:16:25 -0700
From:	Greg KH <greg@...ah.com>
To:	Camille Bordignon <camille.bordignon@...il.com>
Cc:	arve@...roid.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] staging: android: Fix warning cast removes address
 space of expression

On Sun, Apr 20, 2014 at 11:10:57AM +0200, Camille Bordignon wrote:
> Fix sparse warning "cast removes address space of expression"
> Add lost flag "__user" due to cast
> 
> Signed-off-by: Camille Bordignon <camille.bordignon@...il.com>
> ---
> diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
> index cfe4bc8..952c4ae 100644
> --- a/drivers/staging/android/binder.c
> +++ b/drivers/staging/android/binder.c
> @@ -2683,16 +2683,21 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
>  		binder_free_thread(proc, thread);
>  		thread = NULL;
>  		break;
> -	case BINDER_VERSION:
> -		if (size != sizeof(struct binder_version)) {
> +	case BINDER_VERSION: {
> +		struct binder_version __user *bv = ubuf;
> +
> +		if (size != sizeof(*bv)) {
>  			ret = -EINVAL;
>  			goto err;
>  		}
> -		if (put_user(BINDER_CURRENT_PROTOCOL_VERSION, &((struct binder_version *)ubuf)->protocol_version)) {
> +
> +		if (put_user(BINDER_CURRENT_PROTOCOL_VERSION,
> +				&bv->protocol_version)) {
>  			ret = -EINVAL;
>  			goto err;
>  		}
>  		break;
> +	}
>  	default:
>  		ret = -EINVAL;
>  		goto err;
> 
> 

This does not apply to my tree :(
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