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[PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for ChromeOS EC mfd driver

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  [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for ChromeOS EC mfd driver Javier Martinez Canillas <javier@osg.samsung.com> - 2015-08-18 09:20 +0200
    Re: [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for  ChromeOS EC mfd driver Olof Johansson <olof@lixom.net> - 2015-08-18 23:50 +0200
      Re: [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for  ChromeOS EC mfd driver Javier Martinez Canillas <javier@osg.samsung.com> - 2015-08-19 00:30 +0200

#1209087 — [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for ChromeOS EC mfd driver

The ChromeOS mfd driver (MFD_CROS_EC) select the CROS_EC_PROTO config
symbol because the driver uses some communication helper functions in
drivers/platform/chrome/cros_ec_proto.c but other drivers depends on
CROS_EC_PROTO instead. Mixing select and depends can lead to circular
Kconfig dependencies so the MFD_CROS_EC select should be changed to a
depends on CROS_EC_PROTO instead.

But doing so will break git bisect-ability since MFD_CROS_EC will not
be enabled anymore unless the default configs first explicitly enable
the CROS_EC_PROTO dependency.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index b2facab87399..bd406f660ffe 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -619,6 +619,7 @@ CONFIG_QCOM_PM=y
 CONFIG_COMMON_CLK_QCOM=y
 CONFIG_CHROME_PLATFORMS=y
 CONFIG_CROS_EC_CHARDEV=m
+CONFIG_CROS_EC_PROTO=y
 CONFIG_COMMON_CLK_MAX77686=y
 CONFIG_COMMON_CLK_MAX77802=m
 CONFIG_COMMON_CLK_S2MPS11=m
-- 
2.4.3

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#1209496 — Re: [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for ChromeOS EC mfd driver

On Tue, Aug 18, 2015 at 09:10:27AM +0200, Javier Martinez Canillas wrote:
> The ChromeOS mfd driver (MFD_CROS_EC) select the CROS_EC_PROTO config
> symbol because the driver uses some communication helper functions in
> drivers/platform/chrome/cros_ec_proto.c but other drivers depends on
> CROS_EC_PROTO instead. Mixing select and depends can lead to circular
> Kconfig dependencies so the MFD_CROS_EC select should be changed to a
> depends on CROS_EC_PROTO instead.
> 
> But doing so will break git bisect-ability since MFD_CROS_EC will not
> be enabled anymore unless the default configs first explicitly enable
> the CROS_EC_PROTO dependency.
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

Applied to cros/ec-config in arm-soc, which will stay stable in case others
need to bring in as a prereq.


-Olof
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#1209517 — Re: [PATCH] ARM: multi_v7_defconfig: Enable CROS_EC_PROTO for ChromeOS EC mfd driver

Hello Olof,

On 08/18/2015 11:46 PM, Olof Johansson wrote:
> On Tue, Aug 18, 2015 at 09:10:27AM +0200, Javier Martinez Canillas wrote:
>> The ChromeOS mfd driver (MFD_CROS_EC) select the CROS_EC_PROTO config
>> symbol because the driver uses some communication helper functions in
>> drivers/platform/chrome/cros_ec_proto.c but other drivers depends on
>> CROS_EC_PROTO instead. Mixing select and depends can lead to circular
>> Kconfig dependencies so the MFD_CROS_EC select should be changed to a
>> depends on CROS_EC_PROTO instead.
>>
>> But doing so will break git bisect-ability since MFD_CROS_EC will not
>> be enabled anymore unless the default configs first explicitly enable
>> the CROS_EC_PROTO dependency.
>>
>> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
> 
> Applied to cros/ec-config in arm-soc, which will stay stable in case others
> need to bring in as a prereq.
>

Thanks but Bartolomiej's feedback [0] on my patch that made CROS_EC_PROTO
a user selectable option was to leave it as a non-visible option and instead
change the other Kconfig symbols to select CROS_EC_PROTO consistently.

So tomorrow I'll post a new patch series along those lines that will make
this patch obsolete since no defconfig changes will be needed.

IOW, please drop this patch and sorry for the inconvenience.

> 
> -Olof
> 

[0]: https://lkml.org/lkml/2015/8/18/231

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America
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