OMAP3: PM debug: remove sleep_while_idle feature

Remove the OMAP-specific PM debug 'sleep_while_idle' feature which is
currently available as an OMAP-specific debugfs entry.

This duplicates existing ARM-generic functionality available as a
boot-time option using the boot cmdline option 'hohlt'.

If runtime configuration of this is needed, then adding a debugfs
entry for the ARM-generic hlt/nohlt interface should be added.
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/pm-debug.c

@@ -40,7 +40,6 @@
 
 int omap2_pm_debug;
 u32 enable_off_mode;
-u32 sleep_while_idle;
 u32 wakeup_timer_seconds;
 u32 wakeup_timer_milliseconds;
 
@@ -639,8 +638,6 @@ static int pm_dbg_init(void)
 
 	(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
 				   &enable_off_mode, &pm_dbg_option_fops);
-	(void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUSR, d,
-				   &sleep_while_idle, &pm_dbg_option_fops);
 	(void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUSR, d,
 				   &wakeup_timer_seconds, &pm_dbg_option_fops);
 	(void) debugfs_create_file("wakeup_timer_milliseconds",

arch/arm/mach-omap2/pm.h

@@ -69,13 +69,11 @@ extern void omap2_pm_dump(int mode, int resume, unsigned int us);
 extern void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds);
 extern int omap2_pm_debug;
 extern u32 enable_off_mode;
-extern u32 sleep_while_idle;
 #else
 #define omap2_pm_dump(mode, resume, us)		do {} while (0);
 #define omap2_pm_wakeup_on_timer(seconds, milliseconds)	do {} while (0);
 #define omap2_pm_debug				0
 #define enable_off_mode 0
-#define sleep_while_idle 0
 #endif
 
 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)

arch/arm/mach-omap2/pm34xx.c

@@ -497,8 +497,6 @@ void omap_sram_idle(void)
 
 int omap3_can_sleep(void)
 {
-	if (!sleep_while_idle)
-		return 0;
 	if (!omap_uart_can_sleep())
 		return 0;
 	return 1;