From mboxrd@z Thu Jan 1 00:00:00 1970 From: govindraj.raja@ti.com (Govindraj.R) Date: Fri, 17 Sep 2010 21:37:05 +0530 (IST) Subject: [PATCH 05/11] OMAP: UART: don't do automatic bus-level suspend/resume Message-ID: <14067.10.24.255.18.1284739625.squirrel@dbdmail.itg.ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Kevin Hilman 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 --- 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 ae1bc63..b47194a 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -26,6 +26,7 @@ #include #include #include +#include #ifdef CONFIG_SERIAL_OMAP #include @@ -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