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    SubjectRe: [patch 18/30] PCI: xilinx-nwl: Use irq_data_get_irq_chip_data()
    On Thu, Dec 10, 2020 at 1:42 PM Thomas Gleixner <tglx@linutronix.de> wrote:
    >
    > Going through a full irq descriptor lookup instead of just using the proper
    > helper function which provides direct access is suboptimal.
    >
    > In fact it _is_ wrong because the chip callback needs to get the chip data
    > which is relevant for the chip while using the irq descriptor variant
    > returns the irq chip data of the top level chip of a hierarchy. It does not
    > matter in this case because the chip is the top level chip, but that
    > doesn't make it more correct.
    >
    > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    > Cc: Rob Herring <robh@kernel.org>
    > Cc: Bjorn Helgaas <bhelgaas@google.com>
    > Cc: Michal Simek <michal.simek@xilinx.com>
    > Cc: linux-pci@vger.kernel.org
    > Cc: linux-arm-kernel@lists.infradead.org
    > ---
    > drivers/pci/controller/pcie-xilinx-nwl.c | 8 ++------
    > 1 file changed, 2 insertions(+), 6 deletions(-)

    Reviewed-by: Rob Herring <robh@kernel.org>

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