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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: [PATCH v2 03/21] i.MX: ocotp: Simplify MAC address storing logic
Date: Tue, 10 Jan 2017 07:02:57 -0800	[thread overview]
Message-ID: <CAHQ1cqG9O48Qbcc_+B-sNuGtXNafU-=1b+Mb11vYnmiTV53UXw@mail.gmail.com> (raw)
In-Reply-To: <20170109111830.7eqrjbrm3av6hjsg@pengutronix.de>

On Mon, Jan 9, 2017 at 3:18 AM, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> On Mon, Dec 12, 2016 at 10:02:50AM -0800, Andrey Smirnov wrote:
>> Store MAC addresses as 8 byte buffer to avoid the need to have extra
>> code to deal with "6 into 8" conversions and the need to have various
>> magic numbers.
>>
>> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
>> ---
>>  arch/arm/mach-imx/ocotp.c | 11 +++++------
>>  1 file changed, 5 insertions(+), 6 deletions(-)
>>
>> diff --git a/arch/arm/mach-imx/ocotp.c b/arch/arm/mach-imx/ocotp.c
>> index 7f625d8..f549c94 100644
>> --- a/arch/arm/mach-imx/ocotp.c
>> +++ b/arch/arm/mach-imx/ocotp.c
>> @@ -84,7 +84,7 @@ struct ocotp_priv {
>>       struct device_d dev;
>>       int permanent_write_enable;
>>       int sense_enable;
>> -     char ethaddr[6];
>> +     char ethaddr[MAC_BYTES];
>>       struct regmap_config map_config;
>>       const struct imx_ocotp_data *data;
>>  };
>> @@ -409,25 +409,24 @@ static void memreverse(void *dest, const void *src, size_t n)
>>  static int imx_ocotp_get_mac(struct param_d *param, void *priv)
>>  {
>>       struct ocotp_priv *ocotp_priv = priv;
>> -     char buf[8];
>> +     char buf[MAC_BYTES];
>>       int ret;
>>
>>       ret = regmap_bulk_read(ocotp_priv->map, MAC_OFFSET, buf, MAC_BYTES);
>>       if (ret < 0)
>>               return ret;
>>
>> -     memreverse(ocotp_priv->ethaddr, buf, 6);
>> +     memreverse(ocotp_priv->ethaddr, buf, MAC_BYTES);
>>       return 0;
>>  }
>>
>>  static int imx_ocotp_set_mac(struct param_d *param, void *priv)
>>  {
>>       struct ocotp_priv *ocotp_priv = priv;
>> -     char buf[8];
>> +     char buf[MAC_BYTES];
>>       int ret;
>>
>> -     memreverse(buf, ocotp_priv->ethaddr, 6);
>> -     buf[6] = 0; buf[7] = 0;
>> +     memreverse(buf, ocotp_priv->ethaddr, MAC_BYTES);
>
> Unless I have knots in my mind this does not work. dev_add_param_mac()
> expects the MAC address in the given buffer. We pass priv->ethaddr, but
> now with this change the MAC address is in priv->ethaddr + 2. Anything I
> don't see here?

No, you are right, this patch is pretty dumb. I'll drop it in v3.

Sorry for the noise.
Thanks,
Andrey

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  parent reply	other threads:[~2017-01-10 15:03 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-12 18:02 [PATCH v2 00/21] Vybrid related patches Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 01/21] i.MX: esdhc: Enable host->clk during initialization Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 02/21] i.MX: ocotp: Move memory reversing into a subroutine Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 03/21] i.MX: ocotp: Simplify MAC address storing logic Andrey Smirnov
2017-01-09 11:18   ` Sascha Hauer
2017-01-09 11:28     ` Sascha Hauer
2017-01-10 15:02     ` Andrey Smirnov [this message]
2016-12-12 18:02 ` [PATCH v2 04/21] i.MX: ocotp: Add provisions for storing multiple MAC addresses Andrey Smirnov
2016-12-13  9:56   ` Stefan Lengfeld
2016-12-12 18:02 ` [PATCH 05/21] i.MX: ocotp: Initialize OCOTP as early as possible Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 06/21] i.MX: clk: Add IMX_PLLV3_SYS_VF610 subtype Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 07/21] i.MX: ocotp: Add imx_ocotp_sense_enable() Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 08/21] i.MX: imx6-fusemap: Fix SJC_RESP_LOCK width Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 09/21] i.MX: Add fusemap for VF610 Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 10/21] i.MX: vf610: Ramp CPU clock to maximum frequency Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 11/21] i.MX: iomuxv3: Add low-level pad code to headers Andrey Smirnov
2016-12-12 18:02 ` [PATCH v2 12/21] i.MX: iomuxv3: Add helper type to deconstruct iomux_v3_cfg_t values Andrey Smirnov
2017-01-09 12:00   ` Sascha Hauer
2017-01-10 15:01     ` Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 13/21] i.MX: iomuxv3: Add low-level pad configuration routine Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 14/21] i.MX6: sabresd: Remove magic numbers in setup_uart Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 15/21] i.MX: iomuxv3: Use helper functions in iomux-v3.h Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 16/21] i.MX: vf610: Add low-level pin configuration helper Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 17/21] i.MX: iomux-vf610: Add missing pad definitions Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 18/21] i.MX: imx-usb-phy: Add VF610 OF compatiblity string Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 19/21] i.MX: Default CONFI_USB_IMX_PHY to 'y' on Vybrid Andrey Smirnov
2017-01-09 12:03   ` Sascha Hauer
2017-01-10 15:02     ` Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 20/21] i.MX: imx-usb-misc: Add Vybrid support Andrey Smirnov
2016-12-12 18:03 ` [PATCH v2 21/21] i.MX: vf610-twr: Remove MSCM setup code Andrey Smirnov

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