Messages in this thread | | | From | Ard Biesheuvel <> | Date | Fri, 26 May 2023 14:39:10 +0200 | Subject | Re: [PATCH] arm64: acpi: Export symbol for acpi_os_ioremap |
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(cc Lorenzo)
On Fri, 26 May 2023 at 14:20, Huisong Li <lihuisong@huawei.com> wrote: > > The driver who calls the acpi_os_ioremap() cannot be compiled if the 'M' > is selected for the driver. The compiling log is as follows: > --> > MODPOST Module.symvers > ERROR: modpost: "acpi_os_ioremap" [drivers/soc/hisilicon/xxx.ko] undefined! > scripts/Makefile.modpost:136: recipe for target 'Module.symvers' failed > make[1]: *** [Module.symvers] Error 1 > > So this patch exports symbol for acpi_os_ioremap. >
That driver does not exist in mainline.
Why does it need to use acpi_os_ioremap() instead of the ordinary memremap/ioremap routines?
> Signed-off-by: Huisong Li <lihuisong@huawei.com> > --- > arch/arm64/kernel/acpi.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c > index dba8fcec7f33..ec0414caf3d1 100644 > --- a/arch/arm64/kernel/acpi.c > +++ b/arch/arm64/kernel/acpi.c > @@ -354,6 +354,7 @@ void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size) > } > return ioremap_prot(phys, size, pgprot_val(prot)); > } > +EXPORT_SYMBOL(acpi_os_ioremap); > > /* > * Claim Synchronous External Aborts as a firmware first notification. > -- > 2.33.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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