[PATCH v3 2/3] spi: pxa2xx: Prepare for edge-triggered interrupts

Jan Kiszka [off-list ref] writes:

When using the a device with edge-triggered interrupts, such as MSIs,
the interrupt handler has to ensure that there is a point in time during
its execution where all interrupts sources are silent so that a new
event can trigger a new interrupt again.

This is achieved here by disabling all interrupt sources for a moment
before processing them according to the status register. If a new
interrupt should have arrived after we read the status, it will now
re-trigger the interrupt, even in edge mode.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>

Cheers.

--
Robert