diff options
| -rw-r--r-- | arch/arm/mach-omap2/pm24xx.c | 7 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 10 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/serial.c | 5 |
3 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index a40457d81927..c85923e56b85 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -30,6 +30,7 @@ #include <linux/irq.h> #include <linux/time.h> #include <linux/gpio.h> +#include <linux/console.h> #include <asm/mach/time.h> #include <asm/mach/irq.h> @@ -118,6 +119,10 @@ static void omap2_enter_full_retention(void) if (omap_irq_pending()) goto no_sleep; + /* Block console output in case it is on one of the OMAP UARTs */ + if (try_acquire_console_sem()) + goto no_sleep; + omap_uart_prepare_idle(0); omap_uart_prepare_idle(1); omap_uart_prepare_idle(2); @@ -131,6 +136,8 @@ static void omap2_enter_full_retention(void) omap_uart_resume_idle(1); omap_uart_resume_idle(0); + release_console_sem(); + no_sleep: if (omap2_pm_debug) { unsigned long long tmp; diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 75c0cd13ad8e..0ec8a04b7473 100644 --- 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> @@ -385,6 +386,12 @@ void omap_sram_idle(void) omap3_enable_io_chain(); } + /* Block console output in case it is on one of the OMAP UARTs */ + 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 +470,9 @@ void omap_sram_idle(void) omap_uart_resume_idle(3); } + release_console_sem(); + +console_still_active: /* Disable IO-PAD and IO-CHAIN wakeup */ if (omap3_has_io_wakeup() && (per_next_state < PWRDM_POWER_ON || diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index bc934dbe3bf0..d17960a1be25 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -27,6 +27,7 @@ #include <linux/slab.h> #include <linux/serial_8250.h> #include <linux/pm_runtime.h> +#include <linux/console.h> #ifdef CONFIG_SERIAL_OMAP #include <plat/omap-serial.h> @@ -807,6 +808,8 @@ void __init omap_serial_init_port(int port) oh->dev_attr = uart; + acquire_console_sem(); /* in case the earlycon is on the UART */ + /* * Because of early UART probing, UART did not get idled * on init. Now that omap_device is ready, ensure full idle @@ -831,6 +834,8 @@ void __init omap_serial_init_port(int port) omap_uart_block_sleep(uart); uart->timeout = DEFAULT_TIMEOUT; + release_console_sem(); + if ((cpu_is_omap34xx() && uart->padconf) || (uart->wk_en && uart->wk_mask)) { device_init_wakeup(&od->pdev.dev, true); |
