linux-kernel - Re: [PATCH -next] x86/platform/uv: functions should not be declared extern

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Date:   Mon, 31 May 2021 15:45:11 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Qiheng Lin <linqiheng@...wei.com>, mike.travis@....com,
        dimitri.sivanich@....com, russ.anderson@....com,
        dvhart@...radead.org, andy@...radead.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, x86@...nel.org, hpa@...or.com
Cc:     steve.wahl@....com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] x86/platform/uv: functions should not be declared
 extern

Hi,

On 5/31/21 8:07 AM, Qiheng Lin wrote:
> These function declarations in 'bios.h' are already marked extern, thus
> their definition should not have the keyword.
> 
> This quiets the following sparse warnings:
>  function 'uv_bios_get_master_nasid' with external linkage has definition
>  function 'uv_bios_get_heapsize' with external linkage has definition
>  function 'uv_bios_install_heap' with external linkage has definition
>  function 'uv_bios_obj_count' with external linkage has definition
>  function 'uv_bios_enum_objs' with external linkage has definition
>  function 'uv_bios_enum_ports' with external linkage has definition
>  function 'uv_bios_get_geoinfo' with external linkage has definition
>  function 'uv_bios_get_pci_topology' with external linkage has definition
> 
> Signed-off-by: Qiheng Lin <linqiheng@...wei.com>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans



> ---
>  arch/x86/platform/uv/bios_uv.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
> index bf31af3d32d6..7e7634c8be62 100644
> --- a/arch/x86/platform/uv/bios_uv.c
> +++ b/arch/x86/platform/uv/bios_uv.c
> @@ -172,55 +172,55 @@ int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus)
>  				(u64)decode, (u64)domain, (u64)bus, 0, 0);
>  }
>  
> -extern s64 uv_bios_get_master_nasid(u64 size, u64 *master_nasid)
> +s64 uv_bios_get_master_nasid(u64 size, u64 *master_nasid)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, 0, UV_BIOS_EXTRA_MASTER_NASID, 0,
>  				size, (u64)master_nasid);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_get_master_nasid);
>  
> -extern s64 uv_bios_get_heapsize(u64 nasid, u64 size, u64 *heap_size)
> +s64 uv_bios_get_heapsize(u64 nasid, u64 size, u64 *heap_size)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_GET_HEAPSIZE,
>  				0, size, (u64)heap_size);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_get_heapsize);
>  
> -extern s64 uv_bios_install_heap(u64 nasid, u64 heap_size, u64 *bios_heap)
> +s64 uv_bios_install_heap(u64 nasid, u64 heap_size, u64 *bios_heap)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_INSTALL_HEAP,
>  				0, heap_size, (u64)bios_heap);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_install_heap);
>  
> -extern s64 uv_bios_obj_count(u64 nasid, u64 size, u64 *objcnt)
> +s64 uv_bios_obj_count(u64 nasid, u64 size, u64 *objcnt)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_OBJECT_COUNT,
>  				0, size, (u64)objcnt);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_obj_count);
>  
> -extern s64 uv_bios_enum_objs(u64 nasid, u64 size, u64 *objbuf)
> +s64 uv_bios_enum_objs(u64 nasid, u64 size, u64 *objbuf)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_ENUM_OBJECTS,
>  				0, size, (u64)objbuf);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_enum_objs);
>  
> -extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 size, u64 *portbuf)
> +s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 size, u64 *portbuf)
>  {
>  	return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_ENUM_PORTS,
>  				obj_id, size, (u64)portbuf);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_enum_ports);
>  
> -extern s64 uv_bios_get_geoinfo(u64 nasid, u64 size, u64 *buf)
> +s64 uv_bios_get_geoinfo(u64 nasid, u64 size, u64 *buf)
>  {
>  	return uv_bios_call(UV_BIOS_GET_GEOINFO, nasid, (u64)buf, size, 0, 0);
>  }
>  EXPORT_SYMBOL_GPL(uv_bios_get_geoinfo);
>  
> -extern s64 uv_bios_get_pci_topology(u64 size, u64 *buf)
> +s64 uv_bios_get_pci_topology(u64 size, u64 *buf)
>  {
>  	return uv_bios_call(UV_BIOS_GET_PCI_TOPOLOGY, (u64)buf, size, 0, 0, 0);
>  }
>