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From: Randy Dunlap <>
To: Jean Delvare <>
Cc: lkml <>,, akpm <>
Subject: Re: [PATCH -mm] apanel: fix kconfig dependencies
Date: Thu, 7 Feb 2008 11:04:12 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <20080207174251.1b895234@hyperion.delvare>

On Thu, 7 Feb 2008 17:42:51 +0100 Jean Delvare wrote:

> Hi Randy,
> On Wed, 6 Feb 2008 16:27:54 -0800, Randy Dunlap wrote:
> > From: Randy Dunlap <>
> > 
> > Add I2C to config since the driver makes several i2c*() calls.
> Correct.
> > 
> > Add PCI to config because the config selects I2C_I801, which depends
> > on PCI, but currently config* does not follow dependency chains,
> > so randconfig can enable INPUT_APANEL even when PCI is not enabled,
> > which leads to these warnings:
> > linux-2.6.24-mm1/drivers/i2c/busses/i2c-i801.c:641: error: implicit declaration of function 'pci_request_region'
> > /linux-2.6.24-mm1/drivers/i2c/busses/i2c-i801.c:681: error: implicit declaration of function 'pci_release_region'
> I'd rather drop the "select I2C_I801" if the config system can't handle
> it properly. It's not strictly needed (not a build-time dependency), an
> addition to the help text would work as well. Adding dependencies to
> make our selections happy is a bit confusing and likely to cause
> trouble in the future (as dependencies can change...)

OK.  What did you have in mind for the help text.  I changed it
a small bit.

I also added "depends on LEDS_CLASS" since defconfig didn't have that
set, but the build failed with wanting symbols that it provides.

Updated patch:

From: Randy Dunlap <>

Add I2C to config since the driver makes several i2c*() calls.

Add to help text that the Intel I2C ICH (i801) driver is also needed
for this kernel.

Add LEDS_CLASS to config since the driver makes les_classdev_*() calls:
ERROR: "led_classdev_register" [drivers/input/misc/apanel.ko] undefined!
ERROR: "__led_classdev_unregister" [drivers/input/misc/apanel.ko] undefined!

Signed-off-by: Randy Dunlap <>
 drivers/input/misc/Kconfig |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- linux-2.6.24-mm1.orig/drivers/input/misc/Kconfig
+++ linux-2.6.24-mm1/drivers/input/misc/Kconfig
@@ -42,14 +42,14 @@ config INPUT_M68K_BEEP
 	tristate "Fujitsu Lifebook Application Panel buttons"
-	depends on X86
-	select I2C_I801
+	depends on X86 && I2C && LEDS_CLASS
 	 Say Y here for support of the Application Panel buttons, used on
 	 Fujitsu Lifebook. These are attached to the mainboard through
-	 an SMBus interface managed by the I2C Intel ICH (i801) driver.
+	 an SMBus interface managed by the I2C Intel ICH (i801) driver,
+	 which you should also build for this kernel.
 	 To compile this driver as a module, choose M here: the module will
 	 be called apanel.

  reply	other threads:[~2008-02-07 19:05 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-07  0:27 Randy Dunlap
2008-02-07 16:42 ` Jean Delvare
2008-02-07 19:04   ` Randy Dunlap [this message]
2008-02-07 19:12     ` Stephen Hemminger
2008-02-07 21:46     ` Jean Delvare

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