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OMAP: UART: don't do automatic bus-level suspend/resume

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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: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman 2010-09-27 20:19:53 +05:30
parent c04ede382a
commit 3244fcd227
1 changed files with 6 additions and 2 deletions
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8
arch/arm/mach-omap2/serial.c
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@ -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);
}
}
}