leds: tps6131x: add V4L2_FLASH_LED_CLASS dependency

[PATCH] leds: tps6131x: add V4L2_FLASH_LED_CLASS dependency

Posted by Arnd Bergmann 3 months, 2 weeks ago

From: Arnd Bergmann <arnd@arndb.de>

This driver can optionally use the v4l2_flash infrastructure, but fails to
link built=in if that is in a loadable module:

ld.lld-21: error: undefined symbol: v4l2_flash_release
>>> referenced by leds-tps6131x.c:792 (drivers/leds/flash/leds-tps6131x.c:792)

Add the usual Kconfig dependency for it, still allowing it to be built when
CONFIG_V4L2_FLASH_LED_CLASS is disabled.

Fixes: b338a2ae9b31 ("leds: tps6131x: Add support for Texas Instruments TPS6131X flash LED driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/leds/flash/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/leds/flash/Kconfig b/drivers/leds/flash/Kconfig
index 55ca663ca506..5e08102a6784 100644
--- a/drivers/leds/flash/Kconfig
+++ b/drivers/leds/flash/Kconfig
@@ -136,6 +136,7 @@ config LEDS_TPS6131X
 	tristate "LED support for TI TPS6131x flash LED driver"
 	depends on I2C && OF
 	depends on GPIOLIB
+	depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS
 	select REGMAP_I2C
 	help
 	  This option enables support for Texas Instruments TPS61310/TPS61311
-- 
2.39.5

Re: (subset) [PATCH] leds: tps6131x: add V4L2_FLASH_LED_CLASS dependency

Posted by Lee Jones 3 months, 1 week ago

On Fri, 20 Jun 2025 13:43:58 +0200, Arnd Bergmann wrote:
> This driver can optionally use the v4l2_flash infrastructure, but fails to
> link built=in if that is in a loadable module:
> 
> ld.lld-21: error: undefined symbol: v4l2_flash_release
> >>> referenced by leds-tps6131x.c:792 (drivers/leds/flash/leds-tps6131x.c:792)
> 
> Add the usual Kconfig dependency for it, still allowing it to be built when
> CONFIG_V4L2_FLASH_LED_CLASS is disabled.
> 
> [...]

Applied, thanks!

[1/1] leds: tps6131x: add V4L2_FLASH_LED_CLASS dependency
      commit: c3c38e80016548685e439b23999b4f0bd0ad7e05

--
Lee Jones [李琼斯]

Re: [PATCH] leds: tps6131x: add V4L2_FLASH_LED_CLASS dependency

Posted by Randy Dunlap 3 months, 2 weeks ago


On 6/20/25 4:43 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> This driver can optionally use the v4l2_flash infrastructure, but fails to
> link built=in if that is in a loadable module:
> 
> ld.lld-21: error: undefined symbol: v4l2_flash_release
>>>> referenced by leds-tps6131x.c:792 (drivers/leds/flash/leds-tps6131x.c:792)
> 
> Add the usual Kconfig dependency for it, still allowing it to be built when
> CONFIG_V4L2_FLASH_LED_CLASS is disabled.
> 
> Fixes: b338a2ae9b31 ("leds: tps6131x: Add support for Texas Instruments TPS6131X flash LED driver")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

I just made this same patch, so

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>

Thanks.

> ---
>  drivers/leds/flash/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/leds/flash/Kconfig b/drivers/leds/flash/Kconfig
> index 55ca663ca506..5e08102a6784 100644
> --- a/drivers/leds/flash/Kconfig
> +++ b/drivers/leds/flash/Kconfig
> @@ -136,6 +136,7 @@ config LEDS_TPS6131X
>  	tristate "LED support for TI TPS6131x flash LED driver"
>  	depends on I2C && OF
>  	depends on GPIOLIB
> +	depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS
>  	select REGMAP_I2C
>  	help
>  	  This option enables support for Texas Instruments TPS61310/TPS61311

-- 
~Randy