Subject: Re: linux-next: build failure after merge of the drm-misc tree

From: Daniel Vetter <[email-masked]>
Date: Tue, 17 Dec 2019 14:19:37 +0100

On Mon, Dec 16, 2019 at 12:23:31PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the drm-misc tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/gpu/drm/bridge/analogix/analogix-anx6345.c: In function 'anx6345_i2c_probe':
> drivers/gpu/drm/bridge/analogix/analogix-anx6345.c:738:30: error: implicit declaration of function 'i2c_new_dummy' [-Werror=implicit-function-declaration]
>   738 |    anx6345->i2c_clients[i] = i2c_new_dummy(client->adapter,
>       |                              ^~~~~~~~~~~~~
> drivers/gpu/drm/bridge/analogix/analogix-anx6345.c:738:28: warning: assignment to 'struct i2c_client *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
>   738 |    anx6345->i2c_clients[i] = i2c_new_dummy(client->adapter,
>       |                            ^
> 
> Caused by commit
> 
>   6aa192698089 ("drm/bridge: Add Analogix anx6345 support")
> 
> interacting with commit
> 
>   2c2f00ab1641 ("i2c: remove i2c_new_dummy() API")
> 
> From Linus' tree.
> 
> I have applied the following fix up patch for today:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Mon, 16 Dec 2019 12:11:19 +1100
> Subject: [PATCH] drm/bridge: fix up for removal of i2c_new_dummy()
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>

Thanks pulled into drm-next since I just processed the first drm-misc-next
pull.
-Daniel

> ---
>  drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> index 9917ce0d86a0..56f55c53abfd 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> @@ -735,13 +735,13 @@ static int anx6345_i2c_probe(struct i2c_client *client,
>  	/* Map slave addresses of ANX6345 */
>  	for (i = 0; i < I2C_NUM_ADDRESSES; i++) {
>  		if (anx6345_i2c_addresses[i] >> 1 != client->addr)
> -			anx6345->i2c_clients[i] = i2c_new_dummy(client->adapter,
> +			anx6345->i2c_clients[i] = i2c_new_dummy_device(client->adapter,
>  						anx6345_i2c_addresses[i] >> 1);
>  		else
>  			anx6345->i2c_clients[i] = client;
>  
> -		if (!anx6345->i2c_clients[i]) {
> -			err = -ENOMEM;
> +		if (IS_ERR(anx6345->i2c_clients[i])) {
> +			err = PTR_ERR(anx6345->i2c_clients[i]);
>  			DRM_ERROR("Failed to reserve I2C bus %02x\n",
>  				  anx6345_i2c_addresses[i]);
>  			goto err_unregister_i2c;
> -- 
> 2.24.0
> 
> -- 
> Cheers,
> Stephen Rothwell

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch