linux-kernel - Re: [PATCH] drm: vmwgfx: include linux/highmem.h

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Date:   Tue, 12 May 2020 10:29:20 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>
Cc:     VMware Graphics <linux-graphics-maintainer@...are.com>,
        Thomas Hellstrom <thellstrom@...are.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Christian König <christian.koenig@....com>,
        Ira Weiny <ira.weiny@...el.com>,
        Christoph Hellwig <hch@....de>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Andy Lutomirski <luto@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Borislav Petkov <bp@...en8.de>,
        Chris Zankel <chris@...kel.net>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "David S. Miller" <davem@...emloft.net>,
        Helge Deller <deller@....de>, "H. Peter Anvin" <hpa@...or.com>,
        Huang Rui <ray.huang@....com>, Ingo Molnar <mingo@...hat.com>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Max Filippov <jcmvbkbc@...il.com>,
        Paul Mackerras <paulus@...ba.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Al Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: vmwgfx: include linux/highmem.h

On 5/8/20 8:14 PM, Stephen Rothwell wrote:
> Hi Arnd,
> 
> On Sat,  9 May 2020 00:01:31 +0200 Arnd Bergmann <arnd@...db.de> wrote:
>>
>> In order to call kmap_atomic() etc, we need to include linux/highmem.h:
>>
>> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c: In function 'vmw_bo_cpu_blit_line':
>> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:377:4: error: implicit declaration of function 'kunmap_atomic'; did you mean 'in_atomic'? [-Werror=implicit-function-declaration]
>>   377 |    kunmap_atomic(d->src_addr);
>>       |    ^~~~~~~~~~~~~
>>       |    in_atomic
>> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:391:5: error: implicit declaration of function 'kmap_atomic_prot' [-Werror=implicit-function-declaration]
>>   391 |     kmap_atomic_prot(d->dst_pages[dst_page],
>>       |     ^~~~~~~~~~~~~~~~
>> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:390:16: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
>>   390 |    d->dst_addr =
>>       |                ^
>> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c:403:16: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
>>   403 |    d->src_addr =
>>       |                ^
>>
>> Fixes: 46385a895322 ("drm: remove drm specific kmap_atomic code")
>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>> ---
>>  drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
>> index 94d456a1d1a9..1629427d5734 100644
>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
>> @@ -27,6 +27,7 @@
>>   **************************************************************************/
>>  
>>  #include "vmwgfx_drv.h"
>> +#include <linux/highmem.h>
>>  
>>  /*
>>   * Template that implements find_first_diff() for a generic
>> -- 
>> 2.26.0
>>
> 
> Added to linux-next for Monday (in case Andrew doesn't get around to it).
> 

Hi,

What happened with this patch?
I am seeing the same build problems in linux-next of 20200512.

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested


thanks.
-- 
~Randy