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    SubjectRe: [2.6 patch] add -Werror-implicit-function-declaration to CFLAGS
    Adrian Bunk <bunk@stusta.de> wrote:
    >
    > > > >
    > > > > Sorry, I need to build allmodconfig kernels on wacky architectures (eg
    > > > > ppc64) and this patch is killing me.
    > > >
    > > > Can you send me the list of compile errors so that I can work on fixing
    > > > them?
    > > >
    > >
    > > No handily, sorry. Missing virt_to_bus() is the typical problem.
    > >
    >
    > But in this case -Werror-implicit-function-declaration doesn't create
    > new compile errors, it only moves compile errors from compile time to
    > link or depmod time - which is IMHO not a bad change.

    It is a quite inconvenient change if you want to get full coverage with
    `make allmodconfig'.

    Maybe one can do `make -i' and then weed through the noise - I haven't
    tried.

    > If you really want to keep the status quo, you can still steal the
    > following from sparc64:
    > extern unsigned long virt_to_bus_not_defined_use_pci_map(volatile void *addr);
    > #define virt_to_bus virt_to_bus_not_defined_use_pci_map
    > extern unsigned long bus_to_virt_not_defined_use_pci_map(volatile void *addr);
    > #define bus_to_virt bus_to_virt_not_defined_use_pci_map

    Maybe. There were some other failures.

    -
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