2023-02-02 21:03:24

by Arnd Bergmann

[permalink] [raw]
Subject: [PATCH] media: atomisp: add I2C dependency

From: Arnd Bergmann <[email protected]>

Without CONFIG_I2C, atomisp fails to build because of a missing
function declaration:

drivers/staging/media/atomisp/pci/atomisp_v4l2.c: In function 'atomisp_subdev_probe':
drivers/staging/media/atomisp/pci/atomisp_v4l2.c:960:21: error: implicit declaration of function 'i2c_get_adapter'; did you mean 'i2c_get_adapdata'? [-Werror=implicit-function-declaration]
960 | i2c_get_adapter(subdevs->v4l2_subdev.i2c_adapter_id);
| ^~~~~~~~~~~~~~~
| i2c_get_adapdata

Ideally the driver should just move away from calling i2c_get_adapter
as explained in a comment near the call. For now, just use a Kconfig
dependency. Apparently configurations with I2C disabled are rare in
practice as well as in randconfig builds because a lot of other
drivers 'select' the subsystem.

Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/staging/media/atomisp/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/staging/media/atomisp/Kconfig b/drivers/staging/media/atomisp/Kconfig
index c9bff98e5309..8b0de0b5b4a3 100644
--- a/drivers/staging/media/atomisp/Kconfig
+++ b/drivers/staging/media/atomisp/Kconfig
@@ -13,6 +13,7 @@ config VIDEO_ATOMISP
tristate "Intel Atom Image Signal Processor Driver"
depends on VIDEO_DEV && INTEL_ATOMISP
depends on PMIC_OPREGION
+ depends on I2C
select IOSF_MBI
select VIDEOBUF2_VMALLOC
select VIDEO_V4L2_SUBDEV_API
--
2.39.0



2023-02-02 21:35:38

by Hans de Goede

[permalink] [raw]
Subject: Re: [PATCH] media: atomisp: add I2C dependency

Hi Arnd,

On 2/2/23 22:02, Arnd Bergmann wrote:
> From: Arnd Bergmann <[email protected]>
>
> Without CONFIG_I2C, atomisp fails to build because of a missing
> function declaration:
>
> drivers/staging/media/atomisp/pci/atomisp_v4l2.c: In function 'atomisp_subdev_probe':
> drivers/staging/media/atomisp/pci/atomisp_v4l2.c:960:21: error: implicit declaration of function 'i2c_get_adapter'; did you mean 'i2c_get_adapdata'? [-Werror=implicit-function-declaration]
> 960 | i2c_get_adapter(subdevs->v4l2_subdev.i2c_adapter_id);
> | ^~~~~~~~~~~~~~~
> | i2c_get_adapdata
>
> Ideally the driver should just move away from calling i2c_get_adapter
> as explained in a comment near the call. For now, just use a Kconfig
> dependency. Apparently configurations with I2C disabled are rare in
> practice as well as in randconfig builds because a lot of other
> drivers 'select' the subsystem.
>
> Signed-off-by: Arnd Bergmann <[email protected]>

Actually the i2c_get_adapter() call is gone in the atomisp pull-req
which I send to Mauro for 6.3, it is removed by this patch.

https://git.kernel.org/pub/scm/linux/kernel/git/hansg/linux.git/commit/?h=media-atomisp-6.3-1&id=4f205ce7a915ffa4ae0fb24f48714604d39baa29

So adding the I2C dependency is no longer necessary.

Regards,

Hans






> ---
> drivers/staging/media/atomisp/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/staging/media/atomisp/Kconfig b/drivers/staging/media/atomisp/Kconfig
> index c9bff98e5309..8b0de0b5b4a3 100644
> --- a/drivers/staging/media/atomisp/Kconfig
> +++ b/drivers/staging/media/atomisp/Kconfig
> @@ -13,6 +13,7 @@ config VIDEO_ATOMISP
> tristate "Intel Atom Image Signal Processor Driver"
> depends on VIDEO_DEV && INTEL_ATOMISP
> depends on PMIC_OPREGION
> + depends on I2C
> select IOSF_MBI
> select VIDEOBUF2_VMALLOC
> select VIDEO_V4L2_SUBDEV_API


2023-02-02 21:40:45

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] media: atomisp: add I2C dependency

On Thu, Feb 2, 2023, at 22:34, Hans de Goede wrote:
> On 2/2/23 22:02, Arnd Bergmann wrote:
>
> Actually the i2c_get_adapter() call is gone in the atomisp pull-req
> which I send to Mauro for 6.3, it is removed by this patch.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/hansg/linux.git/commit/?h=media-atomisp-6.3-1&id=4f205ce7a915ffa4ae0fb24f48714604d39baa29
>
> So adding the I2C dependency is no longer necessary.

Ok, nice timing then, I must have done thousands of randconfig builds
with atomisp enabled without ever hitting it until today ;-)

Arnd