On 04/04/17 11:18, Sricharan R wrote:
> From: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
>
> The IORT linker section introduced by commit 34ceea275f62
> ("ACPI/IORT: Introduce linker section for IORT entries probing")
> was needed to make sure SMMU drivers are registered (and therefore
> probed) in the kernel before devices using the SMMU have a chance
> to probe in turn.
>
> Through the introduction of deferred IOMMU configuration the linker
> section based IORT probing infrastructure is not needed any longer, in
> that device/SMMU probe dependencies are managed through the probe
> deferral mechanism, making the IORT linker section infrastructure
> unused, so that it can be removed.
>
> Remove the unused IORT linker section probing infrastructure
> from the kernel to complete the ACPI IORT IOMMU configure probe
> deferral mechanism implementation.
Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>
> Tested-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
> Cc: Robin Murphy <robin.murphy@xxxxxxx>
> Cc: Sricharan R <sricharan@xxxxxxxxxxxxxx>
> ---
> drivers/acpi/arm64/iort.c | 2 --
> include/asm-generic/vmlinux.lds.h | 1 -
> include/linux/acpi_iort.h | 3 ---
> 3 files changed, 6 deletions(-)
>
> diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
> index e323ece..e7b1940 100644
> --- a/drivers/acpi/arm64/iort.c
> +++ b/drivers/acpi/arm64/iort.c
> @@ -1000,6 +1000,4 @@ void __init acpi_iort_init(void)
> }
>
> iort_init_platform_devices();
> -
> - acpi_probe_device_table(iort);
> }
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index 0968d13..9faa26c 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -566,7 +566,6 @@
> IRQCHIP_OF_MATCH_TABLE() \
> ACPI_PROBE_TABLE(irqchip) \
> ACPI_PROBE_TABLE(clksrc) \
> - ACPI_PROBE_TABLE(iort) \
> EARLYCON_TABLE()
>
> #define INIT_TEXT \
> diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h
> index 77e0809..f167e1d04 100644
> --- a/include/linux/acpi_iort.h
> +++ b/include/linux/acpi_iort.h
> @@ -52,7 +52,4 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
> { return NULL; }
> #endif
>
> -#define IORT_ACPI_DECLARE(name, table_id, fn) \
> - ACPI_DECLARE_PROBE_ENTRY(iort, name, table_id, 0, NULL, 0, fn)
> -
> #endif /* __ACPI_IORT_H__ */
>
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