linux-kernel - Re: [PATCH v2 RFC] efi: add and expose efi_partition_by

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Message-Id: <20100803115041.101630be.randy.dunlap@oracle.com>
Date:	Tue, 3 Aug 2010 11:50:41 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Will Drewry <wad@...omium.org>
Cc:	linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
	Karel Zak <kzak@...hat.com>, Tejun Heo <tj@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Joe Perches <joe@...ches.com>
Subject: Re: [PATCH v2 RFC] efi: add and expose efi_partition_by_guid

On Mon,  2 Aug 2010 21:52:46 -0500 Will Drewry wrote:


> v2: pr_debug(KERN_WARNING -> pr_debug(. joe@...ches.com
>     moved down trailing {. davem@...emloft.net

Eh?  see below.

> ---
>  fs/partitions/efi.c |   61 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/efi.h |    5 ++++
>  2 files changed, 66 insertions(+), 0 deletions(-)
> 
> diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c
> index 9efb2cf..8669c4f 100644
> --- a/fs/partitions/efi.c
> +++ b/fs/partitions/efi.c
> @@ -633,3 +633,64 @@ int efi_partition(struct parsed_partitions *state)
>  	printk("\n");
>  	return 1;
>  }
> +
> +/**
> + * efi_partition_by_guid
> + * @bdev:	Whole block device to scan for a GPT.
> + * @guid:	Unique identifier for the partition to find.
> + *
> + * N.b., returns on the first match since it should be unique.
> + *
> + * Returns:
> + * -1 if an error occurred
> + *  0 if there was no match (or not GPT)
> + *  >=1 is the index of the partition found.
> + *
> + */
> +int efi_partition_by_guid(struct block_device *bdev, efi_guid_t *guid) {

That opening brace should be on a line by itself:

int efi_partition_by_guid(struct block_device *bdev, efi_guid_t *guid)
{

and the kernel-doc function description should be like so:

/**
 * efi_partition_by_guid - find the first (only) matching guid on a block device

or some such short function description.



> +	gpt_header *gpt = NULL;
> +	gpt_entry *ptes = NULL;
> +	u32 i;
> +	struct parsed_partitions *state;
> +	int part = 0;



---
~Randy
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