linux-kernel - Re: [PATCH] arm64: fix pmem interface definition

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Date:   Thu, 10 Aug 2017 18:14:34 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Will Deacon <will.deacon@....com>,
        Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: fix pmem interface definition

On Thu, Aug 10, 2017 at 04:52:31PM +0200, Arnd Bergmann wrote:
> Defining the two functions as 'static inline' and exporting them
> leads to the interesting case where we can use the interface
> from loadable modules, but not from built-in drivers, as shown
> in this link failure:
> 
> vers/nvdimm/claim.o: In function `nsio_rw_bytes':
> claim.c:(.text+0x1b8): undefined reference to `arch_invalidate_pmem'
> drivers/nvdimm/pmem.o: In function `pmem_dax_flush':
> pmem.c:(.text+0x11c): undefined reference to `arch_wb_cache_pmem'
> drivers/nvdimm/pmem.o: In function `pmem_make_request':
> pmem.c:(.text+0x5a4): undefined reference to `arch_invalidate_pmem'
> pmem.c:(.text+0x650): undefined reference to `arch_invalidate_pmem'
> pmem.c:(.text+0x6d4): undefined reference to `arch_invalidate_pmem'
> 
> This removes the bogus 'static inline'.
> 
> Fixes: d50e071fdaa3 ("arm64: Implement pmem API support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied. Thanks.

-- 
Catalin