linux-kernel - Re: [PATCH] Staging: olpc_dcon: replace some magic numbers

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Date:	Sun, 4 Aug 2013 22:18:59 +0200
From:	Jens Frederich <jfrederich@...il.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, devel@...verdev.osuosl.org,
	Chris Ball <cjb@...top.org>, linux-kernel@...r.kernel.org,
	Andres Salomon <dilinger@...ued.net>
Subject: Re: [PATCH] Staging: olpc_dcon: replace some magic numbers

On Sun, Aug 4, 2013 at 1:14 AM, Dan Carpenter <dan.carpenter@...cle.com> wrote:
> On Sat, Aug 03, 2013 at 10:44:35PM +0200, Jens Frederich wrote:
>> @@ -126,7 +127,7 @@ static int dcon_bus_stabilize(struct dcon_priv *dcon, int is_powered_down)
>>  power_up:
>>       if (is_powered_down) {
>>               x = 1;
>> -             x = olpc_ec_cmd(0x26, (unsigned char *)&x, 1, NULL, 0);
>> +             x = olpc_ec_cmd(EC_DCON_POWER_MODE, (u8 *)&x, 1, NULL, 0);
>                                                     ^^^^^^^^
> You didn't introduce this but using "x" as the inbuf here messy.
> It should be char instead of an int.  The code won't work on big
> endian systems.  I know this hardware is only available on little
> endian systems and that's why it's not a bug.  It's just an ugly
> thing to do.
>

Hello Dan, you're right. It doesn't matter whether the current
hardware is little or big endian. The driver should be able to
support both. I will fix it soon.

thanks,
Jens
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