Pull sn-handle-sc-powerdown into release branch (1f84253e) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/snsc.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -5,7 +5,7 @@
		* License. See the file "COPYING" in the main directory of this archive
		* for more details.
		*
		* Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
		* Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
		*/

		/*
		@@ -70,6 +70,9 @@ struct sysctl_data_s {
		#define EV_CLASS_TEST_WARNING 0x6000ul
		#define EV_CLASS_PWRD_NOTIFY 0x8000ul

		/* ENV class codes */
		#define ENV_PWRDN_PEND 0x4101ul

		#define EV_SEVERITY_POWER_STABLE 0x0000ul
		#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
		#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul

drivers/char/snsc_event.c

+24 −8

Original line number	Diff line number	Diff line
		@@ -5,7 +5,7 @@
		* License. See the file "COPYING" in the main directory of this archive
		* for more details.
		*
		* Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
		* Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
		*/

		/*
		@@ -187,7 +187,8 @@ scdrv_event_severity(int code)
		static void
		scdrv_dispatch_event(char *event, int len)
		{
		int code, esp_code, src;
		static int snsc_shutting_down = 0;
		int code, esp_code, src, class;
		char desc[CHUNKSIZE];
		char *severity;

		@@ -199,9 +200,25 @@ scdrv_dispatch_event(char *event, int len)
		/* how urgent is the message? */
		severity = scdrv_event_severity(code);

		if ((code & EV_CLASS_MASK) == EV_CLASS_PWRD_NOTIFY) {
		class = (code & EV_CLASS_MASK);

		if (class == EV_CLASS_PWRD_NOTIFY \|\| code == ENV_PWRDN_PEND) {
		struct task_struct *p;

		if (snsc_shutting_down)
		return;

		snsc_shutting_down = 1;

		/* give a message for each type of event */
		if (class == EV_CLASS_PWRD_NOTIFY)
		printk(KERN_NOTICE "Power off indication received."
		" Sending SIGPWR to init...\n");
		else if (code == ENV_PWRDN_PEND)
		printk(KERN_CRIT "WARNING: Shutting down the system"
		" due to a critical environmental condition."
		" Sending SIGPWR to init...\n");

		/* give a SIGPWR signal to init proc */

		/* first find init's task */
		@@ -210,12 +227,11 @@ scdrv_dispatch_event(char *event, int len)
		if (p->pid == 1)
		break;
		}
		if (p) { /* we found init's task */
		printk(KERN_EMERG "Power off indication received. Initiating power fail sequence...\n");
		if (p) {
		force_sig(SIGPWR, p);
		} else { /* failed to find init's task - just give message(s) */
		printk(KERN_WARNING "Failed to find init proc to handle power off!\n");
		printk("%s\|$(0x%x)%s\n", severity, esp_code, desc);
		} else {
		printk(KERN_ERR "Failed to signal init!\n");
		snsc_shutting_down = 0; /* so can try again (?) */
		}
		read_unlock(&tasklist_lock);
		} else {