[PATCH] drm/amd/display: include linux/slab.h where needed

[PATCH] drm/amd/display: include linux/slab.h where needed

[Arnd Bergmann]

Calling kzalloc() and related functions requires the
linux/slab.h header to be included:

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c: In function 'dcn21_ipp_create':
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c:679:3: error: implicit declaration of function 'kzalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration]
   kzalloc(sizeof(struct dcn10_ipp), GFP_KERNEL);

A lot of other headers also miss a direct include in this file,
but this is the only one that causes a problem for now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
index 906c84e6b49b..af57885bbff2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -23,6 +23,8 @@
  *
  */
 
+#include <linux/slab.h>
+
 #include "dm_services.h"
 #include "dc.h"
 
-- 
2.20.0

Re: [PATCH] drm/amd/display: include linux/slab.h where needed

[Kazlauskas, Nicholas]

On 2019-12-10 2:59 p.m., Arnd Bergmann wrote:
> Calling kzalloc() and related functions requires the
> linux/slab.h header to be included:
> 
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c: In function 'dcn21_ipp_create':
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c:679:3: error: implicit declaration of function 'kzalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration]
>     kzalloc(sizeof(struct dcn10_ipp), GFP_KERNEL);
> 
> A lot of other headers also miss a direct include in this file,
> but this is the only one that causes a problem for now.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

What version of the kernel are you building?

We have:

#include <linux/slab.h>

in os_types.h which gets included as part of this file:

#include <dc.h> -> #include <dc_types.h> -> #include <os_types.h>

Nicholas Kazlauskas

> ---
>   drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> index 906c84e6b49b..af57885bbff2 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> @@ -23,6 +23,8 @@
>    *
>    */
>   
> +#include <linux/slab.h>
> +
>   #include "dm_services.h"
>   #include "dc.h"
>   
> 

Re: [PATCH] drm/amd/display: include linux/slab.h where needed

[Arnd Bergmann]

On Tue, Dec 10, 2019 at 9:30 PM Kazlauskas, Nicholas
<nicholas.kazlauskas@amd.com> wrote:
>
> On 2019-12-10 2:59 p.m., Arnd Bergmann wrote:
> > Calling kzalloc() and related functions requires the
> > linux/slab.h header to be included:
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c: In function 'dcn21_ipp_create':
> > drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c:679:3: error: implicit declaration of function 'kzalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration]
> >     kzalloc(sizeof(struct dcn10_ipp), GFP_KERNEL);
> >
> > A lot of other headers also miss a direct include in this file,
> > but this is the only one that causes a problem for now.
> >
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> What version of the kernel are you building?

This is v5.5-rc1, plus some local patches.

> We have:
>
> #include <linux/slab.h>
>
> in os_types.h which gets included as part of this file:
>
> #include <dc.h> -> #include <dc_types.h> -> #include <os_types.h>

I don't see linux/slab.h in os_types.h. I now see that commit
4fc4dca8320e ("drm/amd: drop use of drmp.h in os_types.h")
was merged into linux-5.3, which may have caused this.

I also don't see anything in os_types.h that needs linux/slab.h.

    Arnd

Re: [PATCH] drm/amd/display: include linux/slab.h where needed

[Alex Deucher]

Applied.  Thanks!

Alex

On Tue, Dec 10, 2019 at 2:59 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> Calling kzalloc() and related functions requires the
> linux/slab.h header to be included:
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c: In function 'dcn21_ipp_create':
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c:679:3: error: implicit declaration of function 'kzalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration]
>    kzalloc(sizeof(struct dcn10_ipp), GFP_KERNEL);
>
> A lot of other headers also miss a direct include in this file,
> but this is the only one that causes a problem for now.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> index 906c84e6b49b..af57885bbff2 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> @@ -23,6 +23,8 @@
>   *
>   */
>
> +#include <linux/slab.h>
> +
>  #include "dm_services.h"
>  #include "dc.h"
>
> --
> 2.20.0
>
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