Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[deliverable/linux.git] / arch / arm / mach-omap2 / pm34xx.c

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 75c0cd13ad8e0e78ca9686f35d9ec18b370cb6db..648b8c50d02422eeda2146cf3d3ebbe4b44d5a75 100644 (file)
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -28,6 +28,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/console.h>
 
 #include <plat/sram.h>
 #include <plat/clockdomain.h>
@@ -49,6 +50,19 @@
 #include "sdrc.h"
 #include "control.h"
 
+#ifdef CONFIG_SUSPEND
+static suspend_state_t suspend_state = PM_SUSPEND_ON;
+static inline bool is_suspending(void)
+{
+       return (suspend_state != PM_SUSPEND_ON);
+}
+#else
+static inline bool is_suspending(void)
+{
+       return false;
+}
+#endif
+
 /* Scratchpad offsets */
 #define OMAP343X_TABLE_ADDRESS_OFFSET     0xc4
 #define OMAP343X_TABLE_VALUE_OFFSET       0xc0
@@ -385,6 +399,13 @@ void omap_sram_idle(void)
                omap3_enable_io_chain();
        }
 
+       /* Block console output in case it is on one of the OMAP UARTs */
+       if (!is_suspending())
+               if (per_next_state < PWRDM_POWER_ON ||
+                   core_next_state < PWRDM_POWER_ON)
+                       if (try_acquire_console_sem())
+                               goto console_still_active;
+
        /* PER */
        if (per_next_state < PWRDM_POWER_ON) {
                omap_uart_prepare_idle(2);
@@ -463,6 +484,10 @@ void omap_sram_idle(void)
                omap_uart_resume_idle(3);
        }
 
+       if (!is_suspending())
+               release_console_sem();
+
+console_still_active:
        /* Disable IO-PAD and IO-CHAIN wakeup */
        if (omap3_has_io_wakeup() &&
            (per_next_state < PWRDM_POWER_ON ||
@@ -504,8 +529,6 @@ out:
 }
 
 #ifdef CONFIG_SUSPEND
-static suspend_state_t suspend_state;
-
 static int omap3_pm_prepare(void)
 {
        disable_hlt();