linux-kernel - Re: [PATCH] iommu/amd: Fix sparse warnings

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Date:   Tue, 10 Sep 2019 11:11:42 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Adam Zerella <adam.zerella@...il.com>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/amd: Fix sparse warnings

On Sat, Sep 07, 2019 at 04:58:12PM +1000, Adam Zerella wrote:
> There was some simple Sparse warnings related to making some
> signatures static.

And unapplied both of your patches as they causes build failures:

arch/x86/events/amd/iommu.o: In function `perf_iommu_read':
iommu.c:(.text+0xba): undefined reference to `amd_iommu_pc_get_reg'
arch/x86/events/amd/iommu.o: In function `perf_iommu_start':
iommu.c:(.text+0x2df): undefined reference to `amd_iommu_pc_set_reg'
iommu.c:(.text+0x324): undefined reference to `amd_iommu_pc_set_reg'
iommu.c:(.text+0x36b): undefined reference to `amd_iommu_pc_set_reg'
iommu.c:(.text+0x3b0): undefined reference to `amd_iommu_pc_set_reg'
iommu.c:(.text+0x424): undefined reference to `amd_iommu_pc_set_reg'
arch/x86/events/amd/iommu.o:iommu.c:(.text+0x4e4): more undefined references to `amd_iommu_pc_set_reg' follow
arch/x86/events/amd/iommu.o: In function `amd_iommu_pc_init':
iommu.c:(.init.text+0xc): undefined reference to `amd_iommu_pc_supported'
iommu.c:(.init.text+0x131): undefined reference to `get_amd_iommu'
iommu.c:(.init.text+0x140): undefined reference to `amd_iommu_pc_get_max_banks'
iommu.c:(.init.text+0x14f): undefined reference to `amd_iommu_pc_get_max_counters'
drivers/char/agp/intel-gtt.o: In function `intel_gmch_probe':
intel-gtt.c:(.text+0x135d): undefined reference to `intel_iommu_gfx_mapped'
drivers/iommu/amd_iommu_init.o: In function `state_next':
amd_iommu_init.c:(.init.text+0x1ace): undefined reference to `amd_iommu_ops'
drivers/iommu/dmar.o: In function `dmar_parse_one_drhd':
dmar.c:(.text+0x125c): undefined reference to `intel_iommu_ops'
drivers/gpu/drm/i915/intel_device_info.o: In function `intel_device_info_runtime_init':
intel_device_info.c:(.text+0xd89): undefined reference to `intel_iommu_gfx_mapped'
drivers/gpu/drm/i915/gem/i915_gem_stolen.o: In function `i915_gem_init_stolen':
i915_gem_stolen.c:(.text+0x33a): undefined reference to `intel_iommu_gfx_mapped'
drivers/gpu/drm/i915/i915_gem_gtt.o: In function `i915_ggtt_probe_hw':
i915_gem_gtt.c:(.text+0x4f61): undefined reference to `intel_iommu_gfx_mapped'
i915_gem_gtt.c:(.text+0x5127): undefined reference to `intel_iommu_gfx_mapped'
i915_gem_gtt.c:(.text+0x52d1): undefined reference to `intel_iommu_gfx_mapped'
drivers/gpu/drm/i915/i915_gem_gtt.o:i915_gem_gtt.c:(.text+0x53b3): more undefined references to `intel_iommu_gfx_mapped' follow

Please compile-test your patches next time.