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ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix

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If "no_suspend_irq" is used on the sh7372 Mackerel board
with v3.2-rc1 then Suspend-to-RAM fails because the serial
console tries to write to the SCIF driver even though the
power domain is turned off.

This patch checks the state of "console_suspend_enabled"
to see if A3SP should be forced enabled.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2011-11-10 00:44:01 +01:00 committed by Rafael J. Wysocki
parent be2658ffe1
commit 056879d2f2
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-shmobile/pm-sh7372.c
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@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/bitrev.h>
#include <linux/console.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/tlbflush.h>
@ -469,6 +470,11 @@ void __init sh7372_pm_init(void)
/* do not convert A3SM, A3SP, A3SG, A4R power down into A4S */
__raw_writel(0, PDNSEL);
/* serial consoles make use of SCIF hardware located in A3SP,
* keep such power domain on if "no_console_suspend" is set.
*/
sh7372_a3sp.stay_on = !console_suspend_enabled;
sh7372_suspend_init();
sh7372_cpuidle_init();
}