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ARM: SoC cleanups for 3.16

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Cleanups for 3.16. Among these are:
 
 - A bunch of misc cleanups for Broadcom platforms, mostly housekeeping
 - Enabling Common Clock Framework on the older s3c24xx Samsung chipsets
 - Cleanup of the Versatile Express system controller code, moving it to syscon
 - Power management cleanups for OMAP platforms
 
 + a handful of other cleanups across the place
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Merge tag 'cleanup-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next

Pull ARM SoC cleanups from Olof Johansson:
 "Cleanups for 3.16.  Among these are:

   - a bunch of misc cleanups for Broadcom platforms, mostly
     housekeeping
   - enabling Common Clock Framework on the older s3c24xx Samsung
     chipsets
   - cleanup of the Versatile Express system controller code, moving it
     to syscon
   - power management cleanups for OMAP platforms

  plus a handful of other cleanups across the place"

* tag 'cleanup-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (87 commits)
  ARM: kconfig: allow PCI support to be selected with ARCH_MULTIPLATFORM
  clk: samsung: fix build error
  ARM: vexpress: refine dependencies for new code
  clk: samsung: clk-s3c2410-dlck: do not use PNAME macro as it declares __initdata
  cpufreq: exynos: Fix the compile error
  ARM: S3C24XX: move debug-macro.S into the common space
  ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro
  ARM: S3C24XX: trim down debug uart handling
  ARM: compressed/head.S: remove s3c24xx special case
  ARM: EXYNOS: Remove unnecessary inclusion of cpu.h
  ARM: EXYNOS: Migrate Exynos specific macros from plat to mach
  ARM: EXYNOS: Remove exynos_subsys registration
  ARM: EXYNOS: Remove duplicate lines in Makefile
  ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling
  ARM: OMAP4: PRCM: remove references to cm-regbits-44xx.h from PRCM core files
  ARM: OMAP3/4: PRM: add support of late_init call to prm_ll_ops
  ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it
  ARM: OMAP3/4: PRM: provide io chain reconfig function through irq setup
  ARM: OMAP2+: PRM: remove unnecessary cpu_is_XXX calls from prm_init / exit
  ARM: OMAP2+: PRCM: cleanup some header includes
  ...
This commit is contained in:
Linus Torvalds 2014-06-02 16:14:07 -07:00
commit 0a58471541
211 changed files with 4666 additions and 5172 deletions
Download patch file Download diff file Expand all files Collapse all files

74
drivers/of/platform.c
View file

@ -206,12 +206,13 @@ static struct platform_device *of_platform_device_create_pdata(
{
struct platform_device *dev;
if (!of_device_is_available(np))
if (!of_device_is_available(np) ||
of_node_test_and_set_flag(np, OF_POPULATED))
return NULL;
dev = of_device_alloc(np, bus_id, parent);
if (!dev)
return NULL;
goto err_clear_flag;
#if defined(CONFIG_MICROBLAZE)
dev->archdata.dma_mask = 0xffffffffUL;
@ -229,10 +230,14 @@ static struct platform_device *of_platform_device_create_pdata(
if (of_device_add(dev) != 0) {
platform_device_put(dev);
return NULL;
goto err_clear_flag;
}
return dev;
err_clear_flag:
of_node_clear_flag(np, OF_POPULATED);
return NULL;
}
/**
@ -264,14 +269,15 @@ static struct amba_device *of_amba_device_create(struct device_node *node,
pr_debug("Creating amba device %s\n", node->full_name);
if (!of_device_is_available(node))
if (!of_device_is_available(node) ||
of_node_test_and_set_flag(node, OF_POPULATED))
return NULL;
dev = amba_device_alloc(NULL, 0, 0);
if (!dev) {
pr_err("%s(): amba_device_alloc() failed for %s\n",
__func__, node->full_name);
return NULL;
goto err_clear_flag;
}
/* setup generic device info */
@ -311,6 +317,8 @@ static struct amba_device *of_amba_device_create(struct device_node *node,
err_free:
amba_device_put(dev);
err_clear_flag:
of_node_clear_flag(node, OF_POPULATED);
return NULL;
}
#else /* CONFIG_ARM_AMBA */
@ -487,4 +495,60 @@ int of_platform_populate(struct device_node *root,
return rc;
}
EXPORT_SYMBOL_GPL(of_platform_populate);
static int of_platform_device_destroy(struct device *dev, void *data)
{
bool *children_left = data;
/* Do not touch devices not populated from the device tree */
if (!dev->of_node || !of_node_check_flag(dev->of_node, OF_POPULATED)) {
*children_left = true;
return 0;
}
/* Recurse, but don't touch this device if it has any children left */
if (of_platform_depopulate(dev) != 0) {
*children_left = true;
return 0;
}
if (dev->bus == &platform_bus_type)
platform_device_unregister(to_platform_device(dev));
#ifdef CONFIG_ARM_AMBA
else if (dev->bus == &amba_bustype)
amba_device_unregister(to_amba_device(dev));
#endif
else {
*children_left = true;
return 0;
}
of_node_clear_flag(dev->of_node, OF_POPULATED);
return 0;
}
/**
* of_platform_depopulate() - Remove devices populated from device tree
* @parent: device which childred will be removed
*
* Complementary to of_platform_populate(), this function removes children
* of the given device (and, recurrently, their children) that have been
* created from their respective device tree nodes (and only those,
* leaving others - eg. manually created - unharmed).
*
* Returns 0 when all children devices have been removed or
* -EBUSY when some children remained.
*/
int of_platform_depopulate(struct device *parent)
{
bool children_left = false;
device_for_each_child(parent, &children_left,
of_platform_device_destroy);
return children_left ? -EBUSY : 0;
}
EXPORT_SYMBOL_GPL(of_platform_depopulate);
#endif /* CONFIG_OF_ADDRESS */