netdev - Re: [PATCH 3/9 RESENT] staging: r8188eu: Fix sparse warnings in ioctl

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Date:	Fri, 18 Oct 2013 20:45:28 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Ben Hutchings <bhutchings@...arflare.com>
CC:	gregkh@...uxfoundation.org, netdev@...r.kernel.org,
	devel@...verdev.osuosl.org
Subject: Re: [PATCH 3/9 RESENT] staging: r8188eu: Fix sparse warnings in ioctl_linux.c

On 10/18/2013 05:08 PM, Ben Hutchings wrote:
> On Fri, 2013-10-18 at 16:34 -0500, Larry Finger wrote:
>> Sparse checking results in the following warnings:
>>
>>     CHECK   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:3932:17: warning: cast removes
>> address space of expression
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:3933:31: warning: incorrect type
>> in argument 1 (different address spaces)
> [...]
>> -		DBG_88E("[%s] extra = %s\n", __func__, (char *)wrqu->data.pointer);
>> -	if (!memcmp(wrqu->data.pointer, "status", 6)) {
>> +		DBG_88E("[%s] extra = %s\n", __func__, (__force char *)wrqu->data.pointer);
>> +	if (!memcmp((__force const char *)wrqu->data.pointer, "status", 6)) {
> [...]
>
> This is hiding the problem, not fixing it.
>
> This private interface needs to be removed anyway.

I agree, but that is not likely to happen soon. I will just leave this set of 
Sparse warnings alone.

Larry


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