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It is not possible for platform_get_irq() to return 0. Use the
return value from platform_get_irq().
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230803083452.4085650-2-ruanjinjie@huawei.com
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Offset 0x124 should be for IMX_MU_TSR, not IMX_MU_GSR.
Fixes: 70afdab904d2 ("irqchip: Add IMX MU MSI controller driver")
Reported-by: Colin King <colin.i.king@gmail.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[maz: updated commit message, tags]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221004202414.216577-1-Frank.Li@nxp.com
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The MU block found in a number of Freescale/NXP SoCs supports generating
IRQs by writing data to a register.
This enables the MU block to be used as a MSI controller, by leveraging
the platform-MSI API.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[maz: dropped pointless dma-iommu.h and of_pci.h includes]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220922161246.20586-4-Frank.Li@nxp.com
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