From: Arnd Bergmann <arnd@kernel.org>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Daniele Alessandrelli <daniele.alessandrelli@intel.com>,
Martina Krasteva <martinax.krasteva@intel.com>,
Jacopo Mondi <jacopo+renesas@jmondi.org>,
Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
Tianshu Qiu <tian.shu.qiu@intel.com>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media: i2c: select V4L2_ASYNC where needed
Date: Mon, 20 Sep 2021 11:58:24 +0200 [thread overview]
Message-ID: <20210920095830.1259051-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
I came across a link failure from randconfig builds:
x86_64-linux-ld: drivers/media/i2c/ths8200.o: in function `ths8200_remove':
ths8200.c:(.text+0x491): undefined reference to `v4l2_async_unregister_subdev'
x86_64-linux-ld: drivers/media/i2c/ths8200.o: in function `ths8200_probe':
ths8200.c:(.text+0xe49): undefined reference to `v4l2_async_register_subdev'
x86_64-linux-ld: drivers/media/i2c/tw9910.o: in function `tw9910_remove':
tw9910.c:(.text+0x467): undefined reference to `v4l2_async_unregister_subdev'
x86_64-linux-ld: drivers/media/i2c/tw9910.o: in function `tw9910_probe':
tw9910.c:(.text+0x1123): undefined reference to `v4l2_async_register_subdev'
These clearly lack a 'select' statement, but I don't know why
this started happening only now. I had a bit of a look around to find
other configs that have the same problem, but could not come up with
a reliable way and found nothing else through experimentation.
It is likely that other symbols like these exist that need an extra
select.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/media/i2c/Kconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 08feb3e8c1bf..d49eecc4fe33 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -450,6 +450,7 @@ config VIDEO_TW9906
config VIDEO_TW9910
tristate "Techwell TW9910 video decoder"
depends on VIDEO_V4L2 && I2C
+ select V4L2_ASYNC
help
Support for Techwell TW9910 NTSC/PAL/SECAM video decoder.
@@ -597,6 +598,7 @@ config VIDEO_AK881X
config VIDEO_THS8200
tristate "Texas Instruments THS8200 video encoder"
depends on VIDEO_V4L2 && I2C
+ select V4L2_ASYNC
help
Support for the Texas Instruments THS8200 video encoder.
--
2.29.2
next reply other threads:[~2021-09-20 9:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-20 9:58 Arnd Bergmann [this message]
2021-09-20 14:23 ` [PATCH] media: i2c: select V4L2_ASYNC where needed Sakari Ailus
2021-09-20 20:31 ` Randy Dunlap
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