[PATCH] Fix dmar_ir_support() section mismatch

[PATCH] Fix dmar_ir_support() section mismatch

[Alberto Bertogli]

dmar_ir_support() uses the static dmar_tbl variable, which is annotated as
__initdata. This causes a section mismatch because the function is not
annotated as __init.

Since it is only used by (__init) intr_remapping_supported(), fix the
mismatch by annotating it with __init.

The code was introduced by commit 074835f0, Sep 9 2009.

Signed-off-by: Alberto Bertogli <albertito@blitiri.com.ar>
---
 drivers/pci/dmar.c          |    2 +-
 include/linux/intel-iommu.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index b952ebc..e6aa94e 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -1370,7 +1370,7 @@ int dmar_reenable_qi(struct intel_iommu *iommu)
 /*
  * Check interrupt remapping support in DMAR table description.
  */
-int dmar_ir_support(void)
+int __init dmar_ir_support(void)
 {
 	struct acpi_table_dmar *dmar;
 	dmar = (struct acpi_table_dmar *)dmar_tbl;
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 4f0a72a..46d2c21 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -360,6 +360,6 @@ extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
 
 extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
 
-extern int dmar_ir_support(void);
+extern int __init dmar_ir_support(void);
 
 #endif
-- 
1.6.5.2.372.gc0502

Re: [PATCH] Fix dmar_ir_support() section mismatch

[Simon Horman]

On Fri, Dec 04, 2009 at 10:31:32PM -0300, Alberto Bertogli wrote:
> dmar_ir_support() uses the static dmar_tbl variable, which is annotated as
> __initdata. This causes a section mismatch because the function is not
> annotated as __init.
> 
> Since it is only used by (__init) intr_remapping_supported(), fix the
> mismatch by annotating it with __init.
> 
> The code was introduced by commit 074835f0, Sep 9 2009.
> 
> Signed-off-by: Alberto Bertogli <albertito@blitiri.com.ar>

This patch still seems to be necessary, am I missing something?

Tested-by: Simon Horman <horms@verge.net.au>

> ---
>  drivers/pci/dmar.c          |    2 +-
>  include/linux/intel-iommu.h |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
> index b952ebc..e6aa94e 100644
> --- a/drivers/pci/dmar.c
> +++ b/drivers/pci/dmar.c
> @@ -1370,7 +1370,7 @@ int dmar_reenable_qi(struct intel_iommu *iommu)
>  /*
>   * Check interrupt remapping support in DMAR table description.
>   */
> -int dmar_ir_support(void)
> +int __init dmar_ir_support(void)
>  {
>  	struct acpi_table_dmar *dmar;
>  	dmar = (struct acpi_table_dmar *)dmar_tbl;
> diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
> index 4f0a72a..46d2c21 100644
> --- a/include/linux/intel-iommu.h
> +++ b/include/linux/intel-iommu.h
> @@ -360,6 +360,6 @@ extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
>  
>  extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
>  
> -extern int dmar_ir_support(void);
> +extern int __init dmar_ir_support(void);
>  
>  #endif
> -- 
> 1.6.5.2.372.gc0502
> 
> --
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