Merge tag 'imx-dt-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt

From Shawn Guo:
The imx device tree changes for 3.10:

* The huge diff stat is introduced by the pinctrl changes.  With DTC
  macro support ready, we're moving those huge mount of data about pins
  out of pinctrl driver.
* Device tree source updates for GPI, LDB, SRC, cpufreq-cpu0.
* Initial imx6dl device tree support
* Board level DTS changes for some imx27 and imx51 platforms.

* tag 'imx-dt-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6: (605 commits)
  ARM: dts: imx6dl-wandboard: Add USB Host support
  ARM: dts: imx51 cpu node
  ARM: dts: Add missing imx27-phytec-phycore dtb target
  ARM: dts: Add NFC support for i.MX27 Phytec PCM038 module
  ARM: i.MX51: Add PATA support
  ARM: dts: Add initial support for Wandboard Dual-Lite
  ARM: dts: imx: add initial imx6dl-sabreauto support
  ARM: dts: imx: add initial imx6dl-sabresd support
  ARM: dts: imx: make sabreauto and sabresd common
  pinctrl: add pinctrl driver for imx6sl
  pinctrl: add pinctrl driver for imx6dl
  ARM: dts: imx53: fix SD2_DATA1 pad AUDMUX_AUD4 configuration
  ARM: dts: MicroSys sbc6x support (i.MX6)
  ARM i.MX5: Add System Reset Controller (SRC) support for i.MX51 and i.MX53
  ARM i.MX5: Add system reset controller (SRC) to i.MX51 and i.MX53 device tree
  ARM i.MX6q: Link system reset controller (SRC) to IPU in DT
  ARM i.MX6q: Add LDB device to device tree
  ARM: imx5 DT init cpufreq-cpu0 device
  ARM: imx27 DT init cpufreq-cpu0 device
  ARM i.MX53: Add LDB device to device tree
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 32 insertions, 25 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 81f56445fba9..39c9c4a2949f 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2185,9 +2185,8 @@ SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep,
 
 char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff";
 
-static int __orderly_poweroff(void)
+static int __orderly_poweroff(bool force)
 {
-	int argc;
 	char **argv;
 	static char *envp[] = {
 		"HOME=/",
@@ -2196,20 +2195,40 @@ static int __orderly_poweroff(void)
 	};
 	int ret;
 
-	argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc);
-	if (argv == NULL) {
+	argv = argv_split(GFP_KERNEL, poweroff_cmd, NULL);
+	if (argv) {
+		ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC);
+		argv_free(argv);
+	} else {
 		printk(KERN_WARNING "%s failed to allocate memory for \"%s\"\n",
-		       __func__, poweroff_cmd);
-		return -ENOMEM;
+					 __func__, poweroff_cmd);
+		ret = -ENOMEM;
 	}
 
-	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
-				      NULL, NULL, NULL);
-	argv_free(argv);
+	if (ret && force) {
+		printk(KERN_WARNING "Failed to start orderly shutdown: "
+					"forcing the issue\n");
+		/*
+		 * I guess this should try to kick off some daemon to sync and
+		 * poweroff asap.  Or not even bother syncing if we're doing an
+		 * emergency shutdown?
+		 */
+		emergency_sync();
+		kernel_power_off();
+	}
 
 	return ret;
 }
 
+static bool poweroff_force;
+
+static void poweroff_work_func(struct work_struct *work)
+{
+	__orderly_poweroff(poweroff_force);
+}
+
+static DECLARE_WORK(poweroff_work, poweroff_work_func);
+
 /**
  * orderly_poweroff - Trigger an orderly system poweroff
  * @force: force poweroff if command execution fails
@@ -2219,21 +2238,9 @@ static int __orderly_poweroff(void)
  */
 int orderly_poweroff(bool force)
 {
-	int ret = __orderly_poweroff();
-
-	if (ret && force) {
-		printk(KERN_WARNING "Failed to start orderly shutdown: "
-		       "forcing the issue\n");
-
-		/*
-		 * I guess this should try to kick off some daemon to sync and
-		 * poweroff asap.  Or not even bother syncing if we're doing an
-		 * emergency shutdown?
-		 */
-		emergency_sync();
-		kernel_power_off();
-	}
-
-	return ret;
+	if (force) /* do not override the pending "true" */
+		poweroff_force = true;
+	schedule_work(&poweroff_work);
+	return 0;
 }
 EXPORT_SYMBOL_GPL(orderly_poweroff);