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* [PATCH 1/2] regmap: Add eplicit dependencies to catch "select" misuse
@ 2014-08-17 10:08 Geert Uytterhoeven
  2014-08-17 10:08 ` [PATCH 2/2] extcon: sm5502: EXTCON_SM5502 should depend on I2C Geert Uytterhoeven
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Geert Uytterhoeven @ 2014-08-17 10:08 UTC (permalink / raw)
  To: Mark Brown, Greg Kroah-Hartman, MyungJoo Ham, Chanwoo Choi
  Cc: linux-kernel, linux-i2c, linux-spi, Geert Uytterhoeven

Add explicit dependencies for the various regmap modules, so Kconfig
will print a warning message when another module selects a regmap module
without fulfilling its dependencies.

Without this, it's much more difficult to find out which module did the
offending select.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
 drivers/base/regmap/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig
index 4251570610c9..8a3f51f7b1b9 100644
--- a/drivers/base/regmap/Kconfig
+++ b/drivers/base/regmap/Kconfig
@@ -11,12 +11,15 @@ config REGMAP
 
 config REGMAP_I2C
 	tristate
+	depends on I2C
 
 config REGMAP_SPI
 	tristate
+	depends on SPI
 
 config REGMAP_SPMI
 	tristate
+	depends on SPMI
 
 config REGMAP_MMIO
 	tristate
-- 
1.9.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread
* Re: Re: [PATCH 2/2] extcon: sm5502: EXTCON_SM5502 should depend on I2C
@ 2014-08-21  5:27 MyungJoo Ham
  2014-08-21  5:45 ` Chanwoo Choi
  0 siblings, 1 reply; 7+ messages in thread
From: MyungJoo Ham @ 2014-08-21  5:27 UTC (permalink / raw)
  To: 최찬우, Geert Uytterhoeven
  Cc: Mark Brown, Greg Kroah-Hartman, linux-kernel@vger.kernel.org,
	linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org

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> Hi Geert
> 
> Thanks for your report. I already sent a patch[1] to fix this build break
> and I'll send pull request to includec this patch in 3.17-rc2.
> 
> [1] https://lkml.org/lkml/2014/8/13/761
> 
> Best Regards,
> Chanwoo Choi

I do not object to this patch or your patch[1].

However, wouldn't it be better to add depends on I2C at REGMAP_I2C?
When you use REGMAP_I2C, you assume that I2C is already there, don't you?


Cheers,
MyungJoo

> 
> 
> On 08/17/2014 07:08 PM, Geert Uytterhoeven wrote:
> > EXTCON_SM5502 selects REGMAP_I2C, but if I2C=n:
> > 
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_smbus_byte_reg_read¡¯:
> > drivers/base/regmap/regmap-i2c.c:28: error: implicit declaration of function ¡®i2c_smbus_read_byte_data¡¯
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_smbus_byte_reg_write¡¯:
> > drivers/base/regmap/regmap-i2c.c:46: error: implicit declaration of function ¡®i2c_smbus_write_byte_data¡¯
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_smbus_word_reg_read¡¯:
> > drivers/base/regmap/regmap-i2c.c:64: error: implicit declaration of function ¡®i2c_smbus_read_word_data¡¯
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_smbus_word_reg_write¡¯:
> > drivers/base/regmap/regmap-i2c.c:82: error: implicit declaration of function ¡®i2c_smbus_write_word_data¡¯
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_i2c_write¡¯:
> > drivers/base/regmap/regmap-i2c.c:96: error: implicit declaration of function ¡®i2c_master_send¡¯
> > drivers/base/regmap/regmap-i2c.c: In function ¡®regmap_i2c_gather_write¡¯:
> > drivers/base/regmap/regmap-i2c.c:117: error: implicit declaration of function ¡®i2c_check_functionality¡¯
> > drivers/base/regmap/regmap-i2c.c:130: error: implicit declaration of function ¡®i2c_transfer¡¯
> > 
> > Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
> > ---
> >  drivers/extcon/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> > index 6f2f4727de2c..764f3a113e0a 100644
> > --- a/drivers/extcon/Kconfig
> > +++ b/drivers/extcon/Kconfig
> > @@ -72,6 +72,7 @@ config EXTCON_PALMAS
> >  
> >  config EXTCON_SM5502
> >  	tristate "SM5502 EXTCON support"
> > +	depends on I2C
> >  	select IRQ_DOMAIN
> >  	select REGMAP_I2C
> >  	select REGMAP_IRQ
> > 
> 
> 
> 
> 
>        
>   
>          
> 
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^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2014-08-21  7:10 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-08-17 10:08 [PATCH 1/2] regmap: Add eplicit dependencies to catch "select" misuse Geert Uytterhoeven
2014-08-17 10:08 ` [PATCH 2/2] extcon: sm5502: EXTCON_SM5502 should depend on I2C Geert Uytterhoeven
2014-08-21  2:18   ` Chanwoo Choi
2014-08-17 12:31 ` [PATCH 1/2] regmap: Add eplicit dependencies to catch "select" misuse Wolfram Sang
2014-08-17 13:54 ` Mark Brown
  -- strict thread matches above, loose matches on Subject: below --
2014-08-21  5:27 Re: [PATCH 2/2] extcon: sm5502: EXTCON_SM5502 should depend on I2C MyungJoo Ham
2014-08-21  5:45 ` Chanwoo Choi
2014-08-21  7:10   ` Geert Uytterhoeven

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