For the upcoming device MSI support it's required to have a default irq_chip::ack implementation (irq_chip_ack_parent) so the drivers do not need to care. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/base/platform-msi.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/base/platform-msi.c +++ b/drivers/base/platform-msi.c @@ -95,6 +95,8 @@ static void platform_msi_update_chip_ops chip->irq_mask = irq_chip_mask_parent; if (!chip->irq_unmask) chip->irq_unmask = irq_chip_unmask_parent; + if (!chip->irq_ack) + chip->irq_ack = irq_chip_ack_parent; if (!chip->irq_eoi) chip->irq_eoi = irq_chip_eoi_parent; if (!chip->irq_set_affinity)
