linux-kernel - Re: [PATCH v2] gpu: host1x: fix missing 'host1x_context_device_bus

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Message-ID: <49374358.fMDQidcC6G@senjougahara>
Date: Sat, 24 Jan 2026 10:20:55 +0900
From: Mikko Perttunen <mperttunen@...dia.com>
To: linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 simona@...ll.ch, airlied@...il.com, thierry.reding@...il.com,
 Ben Dooks <ben.dooks@...ethink.co.uk>
Cc: linux-kernel@...r.kernel.org, Ben Dooks <ben.dooks@...ethink.co.uk>
Subject:
 Re: [PATCH v2] gpu: host1x: fix missing 'host1x_context_device_bus_type'

On Friday, January 23, 2026 11:05 PM Ben Dooks wrote:
> The drivers/gpu/host1x/context_bus.c does not include
> any declaration of host1x_context_device_bus_type, and
> after including "context.h" it also showed that there
> are two definitons in the kernel, so fix those two
> 
> Fix by removing the definition in context.h and include
> <linux/host1x_context_bus.h> in context_bus.c
> 
> Fixes the following sparse warning:
> drivers/gpu/host1x/context_bus.c:9:23: warning: symbol 'host1x_context_device_bus_type' was not declared. Should it be static?
> 
> Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
> --
> v2:
>   - removed fixes line
>   - changed to include into the c files directly
> ---
>  drivers/gpu/host1x/context.c     | 1 +
>  drivers/gpu/host1x/context.h     | 2 --
>  drivers/gpu/host1x/context_bus.c | 1 +
>  3 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/host1x/context.c b/drivers/gpu/host1x/context.c
> index a6f6779662a3..476e8c5e1297 100644
> --- a/drivers/gpu/host1x/context.c
> +++ b/drivers/gpu/host1x/context.c
> @@ -12,6 +12,7 @@
>  
>  #include "context.h"
>  #include "dev.h"
> +#include <linux/host1x_context_bus.h>

Both this and the #include below are sorted incorrectly (should be within the linux/ block of includes and alphabetically sorted). Otherwise looks good.

Mikko

>  
>  static void host1x_memory_context_release(struct device *dev)
>  {
> diff --git a/drivers/gpu/host1x/context.h b/drivers/gpu/host1x/context.h
> index 3e03bc1d3bac..78bcf08cc90a 100644
> --- a/drivers/gpu/host1x/context.h
> +++ b/drivers/gpu/host1x/context.h
> @@ -13,8 +13,6 @@
>  
>  struct host1x;
>  
> -extern struct bus_type host1x_context_device_bus_type;
> -
>  struct host1x_memory_context_list {
>  	struct mutex lock;
>  	struct host1x_memory_context *devs;
> diff --git a/drivers/gpu/host1x/context_bus.c b/drivers/gpu/host1x/context_bus.c
> index 7cd0e1a5edd1..c0ba0433c686 100644
> --- a/drivers/gpu/host1x/context_bus.c
> +++ b/drivers/gpu/host1x/context_bus.c
> @@ -5,6 +5,7 @@
>  
>  #include <linux/device.h>
>  #include <linux/of.h>
> +#include <linux/host1x_context_bus.h>
>  
>  const struct bus_type host1x_context_device_bus_type = {
>  	.name = "host1x-context",
>