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authorRafael J. Wysocki <rjw@sisk.pl>2011-09-26 20:12:45 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-09-26 20:12:45 +0200
commit0d41da2e31e81f5c8aaabe17f769de4304b2d4c8 (patch)
tree540acefba9bf01d3880d7bacb767fbf9b1fe80b4 /arch/arm/mach-omap2/powerdomain.c
parenta0089bd617adea27ebc352e1e0871649ab1dbaa6 (diff)
parente8b364b88cc4001b21c28c1ecf1e1e3ffbe162e6 (diff)
downloadtalos-op-linux-0d41da2e31e81f5c8aaabe17f769de4304b2d4c8.tar.gz
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Merge branch 'pm-fixes' into pm-domains
Merge commit e8b364b88cc4001b21c28c1ecf1e1e3ffbe162e6 (PM / Clocks: Do not acquire a mutex under a spinlock) fixing a regression in drivers/base/power/clock_ops.c. Conflicts: drivers/base/power/clock_ops.c
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain.c25
1 files changed, 16 insertions, 9 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 9af08473bf10..ef71fdd40fc4 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -195,28 +195,35 @@ static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused)
/**
* pwrdm_init - set up the powerdomain layer
- * @pwrdm_list: array of struct powerdomain pointers to register
+ * @pwrdms: array of struct powerdomain pointers to register
* @custom_funcs: func pointers for arch specific implementations
*
- * Loop through the array of powerdomains @pwrdm_list, registering all
- * that are available on the current CPU. If pwrdm_list is supplied
- * and not null, all of the referenced powerdomains will be
- * registered. No return value. XXX pwrdm_list is not really a
- * "list"; it is an array. Rename appropriately.
+ * Loop through the array of powerdomains @pwrdms, registering all
+ * that are available on the current CPU. Also, program all
+ * powerdomain target state as ON; this is to prevent domains from
+ * hitting low power states (if bootloader has target states set to
+ * something other than ON) and potentially even losing context while
+ * PM is not fully initialized. The PM late init code can then program
+ * the desired target state for all the power domains. No return
+ * value.
*/
-void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs)
+void pwrdm_init(struct powerdomain **pwrdms, struct pwrdm_ops *custom_funcs)
{
struct powerdomain **p = NULL;
+ struct powerdomain *temp_p;
if (!custom_funcs)
WARN(1, "powerdomain: No custom pwrdm functions registered\n");
else
arch_pwrdm = custom_funcs;
- if (pwrdm_list) {
- for (p = pwrdm_list; *p; p++)
+ if (pwrdms) {
+ for (p = pwrdms; *p; p++)
_pwrdm_register(*p);
}
+
+ list_for_each_entry(temp_p, &pwrdm_list, node)
+ pwrdm_set_next_pwrst(temp_p, PWRDM_POWER_ON);
}
/**
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