path: root/Documentation
diff options
authorBoris BREZILLON <boris.brezillon@free-electrons.com>2015-03-02 10:18:18 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-03-06 00:46:44 +0100
commit2c7af5ba65cfb0145ad8e11f856035c10ba0d22c (patch)
treea60f47a06dcafab7973c0f2f2a4135c6700a0f19 /Documentation
parentwatchdog: at91sam9: request the irq with IRQF_NO_SUSPEND (diff)
tty: serial: atmel: rework interrupt and wakeup handling
The IRQ line connected to the DBGU UART is often shared with a timer device which request the IRQ with IRQF_NO_SUSPEND. Since the UART driver is correctly disabling IRQs when entering suspend we can safely request the IRQ with IRQF_COND_SUSPEND so that irq core will not complain about mixing IRQF_NO_SUSPEND and !IRQF_NO_SUSPEND. Rework the interrupt handler to wake the system up when an interrupt happens on the DEBUG_UART while the system is suspended. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions