On Mon, Feb 10, 2014 at 5:22 PM, Chen-Yu Tsai [off-list ref] wrote:

On tha Allwinner A20 SoC, the external interrupts on the pin controller
device are connected to the GIC. Without chained_irq_{enter, exit},
external GPIO interrupts, such as used by mmc core card detect, cause
the system to hang.

Cc: stable at vger.kernel.org
Signed-off-by: Chen-Yu Tsai <redacted>

Patch applied for fixes with Maxime's ACK.

Yours,
Linus Walleij