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From: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org>
To: Alexey Orishko <alexey.orishko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: gregkh-l3A5Bk7waGM@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org,
	yauheni.kaliuta-xNZwKgViW5gAvxtiuMwx3w@public.gmane.org,
	balbi-l0cyMroinI0@public.gmane.org,
	sjur.brandeland-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org,
	Alexey Orishko
	<alexey.orishko-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org>
Subject: Re: [PATCHv2 2/2] USB CDC NCM host driver
Date: Thu, 25 Nov 2010 21:59:51 -0800	[thread overview]
Message-ID: <20101125215951.5a77e811@nehalam> (raw)
In-Reply-To: <1290694472-2680-2-git-send-email-alexey.orishko-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org>

On Thu, 25 Nov 2010 15:14:32 +0100
Alexey Orishko <alexey.orishko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> +/*
> + * We need to align the beginning of the IP packet (not the Ethernet framing).
> + * The following macro aligns the given offset to the given remainder
> + * and modulus, which must be power of two.
> + */
> +#define	CDC_NCM_ALIGN(rem, offset, mod)	\
> +	((long)(((long)(rem)) - ((long)((-(long)(offset)) & (-(long)(mod))))))

Isn't existing PTR_ALIGN macro sufficient?

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      parent reply	other threads:[~2010-11-26  5:59 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-25 14:14 [PATCHv2 1/2] usbnet: changes for upcoming cdc_ncm driver Alexey Orishko
2010-11-25 14:14 ` [PATCHv2 2/2] USB CDC NCM host driver Alexey Orishko
     [not found]   ` <1290694472-2680-2-git-send-email-alexey.orishko-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org>
2010-11-26  5:59     ` Stephen Hemminger [this message]

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