From: Kevin Hilman <[email protected]> Since the omap_device for UART is currently managed inside the idle path itself, don't let the bus-level code suspend/resume the UART.
To prevent this, pm_runtime_get() is used when preparing for suspend and pm_runtime_put() is used when finished with suspend. Signed-off-by: Kevin Hilman <[email protected]> Signed-off-by: Govindraj.R <[email protected]> --- arch/arm/mach-omap2/serial.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 6ffbc92..ff83e91 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/serial_8250.h> +#include <linux/pm_runtime.h> #ifdef CONFIG_SERIAL_OMAP #include <plat/omap-serial.h> @@ -530,14 +531,17 @@ void omap_uart_enable_irqs(int enable) struct omap_uart_state *uart; list_for_each_entry(uart, &uart_list, node) { - if (enable) + if (enable) { + pm_runtime_put_sync(&uart->pdev->dev); ret = request_threaded_irq(uart->irq, NULL, omap_uart_interrupt, IRQF_SHARED, "serial idle", (void *)uart); - else + } else { + pm_runtime_get_noresume(&uart->pdev->dev); free_irq(uart->irq, (void *)uart); + } } } -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
