linux-kernel - Re: [PATCH v2] partitions/efi: Fix partition name parsing in GUID partition entry

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Date:   Wed, 8 Jan 2020 05:39:26 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Nikolai Merinov <n.merinov@...ngo-systems.com>
Cc:     Davidlohr Bueso <dave@...olabs.net>, Jens Axboe <axboe@...nel.dk>,
        linux-efi@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] partitions/efi: Fix partition name parsing in GUID
 partition entry

> index db2fef7dfc47..51287a8a3bea 100644
> --- a/block/partitions/efi.c
> +++ b/block/partitions/efi.c
> @@ -715,7 +715,7 @@ int efi_partition(struct parsed_partitions *state)
>  				ARRAY_SIZE(ptes[i].partition_name));
>  		info->volname[label_max] = 0;
>  		while (label_count < label_max) {
> -			u8 c = ptes[i].partition_name[label_count] & 0xff;
> +			u8 c = le16_to_cpu(ptes[i].partition_name[label_count]) & 0xff;
>  			if (c && !isprint(c))
>  				c = '!';
>
This adds an overly long line.  Please add a an efi_char_from_cpu or
similarly named helper to encapsulate this logic.

Otherwise the change looks good.