[RFC,v2,05/16] arm: domain: Remove hack to add dev->driver.

Commit Message

Lina Iyer June 27, 2015, 3:02 a.m. UTC

Fixed in Generic PM domains framework.

Signed-off-by: Lina Iyer <[e-mail]>
---
 arch/arm/kernel/domains.c | 20 --------------------
 1 file changed, 20 deletions(-)

Patch

diff --git a/arch/arm/kernel/domains.c b/arch/arm/kernel/domains.c
index 8388f54..3248409 100644
--- a/arch/arm/kernel/domains.c
+++ b/arch/arm/kernel/domains.c
@@ -48,26 +48,6 @@  static int arm_domain_cpu_init(void)
 			return -ENODEV;
 		}
 
-		/* 
-		 * HACK: genpd checks if devices are runtime_suspended
-		 * before doing a poweroff of the domain.  However, that check
-		 * assumes that that device has a driver.  Since CPU devices don't
-		 * have a driver, genpd assumes that the device is runtime_suspended
-		 * and will power off the domain as soon as the any device 
-		 * in the domain does a runtime_suspend.
-		 *
-		 * c.f. the following code in pm_genpd_poweroff():
-		 *
-		 * if (pdd->dev->driver && (!pm_runtime_suspended(pdd->dev)
-		 *      || pdd->dev->power.irq_safe))
-		 *  	not_suspended++;
-		 *
-		 * Just removing the pdd->dev->driver check would also work, 
-		 * but not sure if that's right in the general case.
-		 */
-		cpu_dev->driver = kzalloc(sizeof(struct device_driver), GFP_KERNEL);
-		WARN_ON(!cpu_dev->driver);
-
 		if (cpu_online(cpuid)) {
 			pm_runtime_set_active(cpu_dev);
 			pm_runtime_get_noresume(cpu_dev);