linux-kernel - Re: [PATCH 2/2] ibft: For UEFI machines actually do scan ACPI for iBFT.

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Date:	Wed, 21 Apr 2010 14:29:28 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Konrad Rzeszutek Wilk <konrad@...nel.org>
Cc:	linux-kernel@...r.kernel.org, gpxe-devel@...erboot.org,
	Mike Christie <michaelc@...wisc.edu>,
	Peter Jones <pjones@...hat.com>
Subject: Re: [PATCH 2/2] ibft: For UEFI machines actually do scan ACPI for
 iBFT.

On Fri,  9 Apr 2010 14:21:28 +0000
Konrad Rzeszutek Wilk <konrad@...nel.org> wrote:

> For machines with IBFT 1.03 do scan the ACPI table for 'iBFT'
> or for 'IBFT'. If the machine is in UEFI mode, only do the ACPI
> table scan. For all other machines (pre IBFT 1.03) do
> a memory scan if not found in the ACPI tables.
> 
> Author: Konrad Rzeszutek Wilk <konrad@...nel.org>

The Author: line is unneeded and inappropriate here.  That's what the
From: line does.

> Acked-by: Peter Jones <pjones@...hat.com>
> Tested-by: Mike Christie <michaelc@...wisc.edu>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad@...nel.org>

Your covering email indicates that Mike and Peter wrote the patches,
but neither of the patches have their signoffs.  Can we please sort all
this out?


> ---
>  drivers/firmware/iscsi_ibft_find.c |   31 +++++++++++++++++++------------
>  1 files changed, 19 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/firmware/iscsi_ibft_find.c b/drivers/firmware/iscsi_ibft_find.c
> index 8f4d157..0bc3fae 100644
> --- a/drivers/firmware/iscsi_ibft_find.c
> +++ b/drivers/firmware/iscsi_ibft_find.c
> @@ -56,23 +56,12 @@ static int __init acpi_find_ibft(struct acpi_table_header *header)
>  }
>  #endif /* CONFIG_ACPI */
>  
> -/*
> - * Routine used to find the iSCSI Boot Format Table. The logical
> - * kernel address is set in the ibft_addr global variable.
> - */
> -unsigned long __init find_ibft_region(unsigned long *sizep)
> +static int __init find_ibft_mem_scan(void)

The name seems weird.  find_foo_scan().  So we're trying to find a scan
for a foo.

>  {
>  	unsigned long pos;
>  	unsigned int len = 0;
>  	void *virt;
>  
> -	ibft_addr = NULL;
> -
> -	/* iBFT 1.03 section 1.4.3.1 mandates that UEFI machines will
> -	 * only use ACPI for this */
> -	if (efi_enabled)
> -		return 0;
> -
>  	for (pos = IBFT_START; pos < IBFT_END; pos += 16) {
>  		/* The table can't be inside the VGA BIOS reserved space,
>  		 * so skip that area */
>
> ...
>
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