linux-kernel - Re: [PATCH v2] spi: core: Validate lenght of the transfers in message

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Date:	Mon, 17 Feb 2014 17:20:00 +0200
From:	"Ivan T. Ivanov" <iivanov@...sol.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Gerhard Sittig <gsi@...x.de>
Subject: Re: [PATCH v2] spi: core: Validate lenght of the transfers in
 message


Hi, Please ignore this patch.

On Sat, 2014-02-15 at 08:09 +0200, Ivan T. Ivanov wrote:

> 
> +		/*
> +		 * SPI transfer length should be multiple of SPI word size
> +		 * where SPI word size should be power-of-two multiple
> +		 */
> +		if (xfer->bits_per_word <= 8)
> +			w_size = 1;
> +		else if (xfer->bits_per_word <= 16)
> +			w_size = 2;
> +		else
> +			w_size = 4;
> +
> +		n_words = xfer->len / w_size;
> +		/* No partial transfers accepted */
> +		if (!n_words || xfer->len % xfer->bits_per_word)

This should be
if (!n_words || xfer->len % w_size)


Regards,
Ivan

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