PCI: designware: Setup and clear exactly one MSI at a time
The setup_irq function is supposed to set up exactly one MSI IRQ. Multiple IRQ setup is handled differently, to respect the choices made by the upper layers. Also only clear one MSI IRQ at a time; the PCI core will call into this function multiple times if it has to tear down more than one MSI IRQ. Signed-off-by: NLucas Stach <l.stach@pengutronix.de> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NPratyush Anand <pratyush.anand@st.com> Acked-by: NJingoo Han <jg1.han@samsung.com>
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