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ARM: vexpress: refine dependencies for new code

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The versatile express changes for 3.16 introduced a number of
build regressions for randconfig kernels by not tracking dependencies
between the components right.

This patch tries to rectify that:

* the mach-vexpress code cannot link without the syscfg driver,
  which in turn needs MFD_VEXPRESS_SYSREG
* various drivers call devm_regmap_init_vexpress_config(), which
  has to be exported so it can be used by loadable modules
* the configuration bus uses OF DT helper functions that are not
  available to platforms disable CONFIG_OF
* The sysreg driver exports GPIOs through gpiolib, which can
  be disabled on some platforms.
* The clocksource code cannot be built on platforms that don't
  use modern timekeeping but rely on gettimeoffset.

Signed-off-by: Arnd Bergmann <[email protected]>
This commit is contained in:
Arnd Bergmann 2014-05-26 17:25:22 +02:00
commit b33cdd283b
5 changed files with 6 additions and 3 deletions
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1
drivers/bus/Kconfig
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@ -46,6 +46,7 @@ config VEXPRESS_CONFIG
bool "Versatile Express configuration bus"
default y if ARCH_VEXPRESS
depends on ARM || ARM64
depends on OF
select REGMAP
help
Platform configuration infrastructure for the ARM Ltd.

2
drivers/bus/vexpress-config.c
View file

@ -118,7 +118,7 @@ struct regmap *devm_regmap_init_vexpress_config(struct device *dev)
return regmap;
}
EXPORT_SYMBOL_GPL(devm_regmap_init_vexpress_config);
struct device *vexpress_config_bridge_register(struct device *parent,
struct vexpress_config_bridge_ops *ops, void *context)