netdev - Re: [PATCH v5] can: add Renesas R-Car CAN driver

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Date:	Mon, 20 Jan 2014 12:43:40 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	wg@...ndegger.com, mkl@...gutronix.de, linux-can@...r.kernel.org,
	Linux-sh list <linux-sh@...r.kernel.org>, vksavl@...il.com
Subject: Re: [PATCH v5] can: add Renesas R-Car CAN driver

Hi Sergei,

On Thu, Dec 26, 2013 at 10:37 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> Changes in version 3:

> - added '__packed' to 'struct rcar_can_mbox_regs' and 'struct rcar_can_regs';
> - removed unneeded type cast in the probe() method.

> +/* Mailbox registers structure */
> +struct rcar_can_mbox_regs {
> +       u32 id;         /* IDE and RTR bits, SID and EID */
> +       u8 stub;        /* Not used */
> +       u8 dlc;         /* Data Length Code - bits [0..3] */
> +       u8 data[8];     /* Data Bytes */
> +       u8 tsh;         /* Time Stamp Higher Byte */
> +       u8 tsl;         /* Time Stamp Lower Byte */
> +} __packed;

Sorry, I missed the earlier discussion, but why the _packed?
One u32 and 12 bytes makes a nice multiple of 4.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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