linux-kernel - Re: [PATCH v2 1/3] floppy: add FD_AUTODETECT_SIZE define for struct floppy_drive

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Date:   Sun, 26 Apr 2020 13:24:09 -0700
From:   Joe Perches <joe@...ches.com>
To:     Denis Efremov <efremov@...ux.com>, linux-block@...r.kernel.org
Cc:     Willy Tarreau <w@....eu>, Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] floppy: add FD_AUTODETECT_SIZE define for struct
 floppy_drive_params

On Sun, 2020-04-26 at 16:07 +0300, Denis Efremov wrote:
> Use FD_AUTODETECT_SIZE for autodetect buffer size in struct
> floppy_drive_params instead of a magic number.

trivia:

> diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
[]
> @@ -2076,7 +2076,8 @@ static int next_valid_format(int drive)
>  
>  	probed_format = drive_state[drive].probed_format;
>  	while (1) {
> -		if (probed_format >= 8 || !drive_params[drive].autodetect[probed_format]) {
> +		if (probed_format >= FD_AUTODETECT_SIZE ||
> +			!drive_params[drive].autodetect[probed_format]) {

floppy.c almost exclusively uses multi-line statement
alignment to open parenthesis.  It'd be nicer to keep
using that style.


>  			drive_state[drive].probed_format = 0;
>  			return 1;
>  		}
> @@ -3445,13 +3446,13 @@ static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
>  	return 0;
>  }
>  
> -static bool valid_floppy_drive_params(const short autodetect[8],
> +static bool valid_floppy_drive_params(const short autodetect[FD_AUTODETECT_SIZE],
>  		int native_format)
>