RE: [PATCH] r8152: Add support for setting MAC to system's Auxiliary MAC address

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> -----Original Message-----
> From: Bjørn Mork [mailto:bjorn@xxxxxxx]
> Sent: Thursday, June 2, 2016 3:11 AM
> To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>
> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; hayeswang@xxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-
> usb@xxxxxxxxxxxxxxx; pali.rohar@xxxxxxxxx; anthony.wong@xxxxxxxxxxxxx
> Subject: Re: [PATCH] r8152: Add support for setting MAC to system's
> Auxiliary MAC address
> 
> <Mario_Limonciello@xxxxxxxx> writes:
> 
> >> > +static u8 amac_ascii_to_hex(int c) {
> >> > +	if (c <= 0x39)
> >> > +		return (u8)(c - 0x30);
> >> > +	else if (c <= 0x46)
> >> > +		return (u8)(c - 0x37);
> >> > +	return (u8)(c - 0x57);
> >> > +}
> >>
> >
> > Sorry forgot to address this.
> >
> >> We really don't have such a function somewhere in the kernel already?
> >
> > There is a function in acpi/acpica/uthex.c that does this, but it
> > doesn't seem to be used by anything outside of acpica so far.  Would it be
> OK style wise to #include " ../../acpi/acpica/acutils.h" from r8152.c?
> 
> Makes me wonder where you looked....  You have hex_to_bin() and
> hex2bin() in include/linux/kernel.h
> 


Thank you, I completely missed that.  I wasn't looking for literals in my grepping.  I'll use this instead.

> You could look at usbnet_get_ethernet_addr() for an example of how to do
> this properly.  It's pretty close to this driver in the tree, and should be a
> natural starting point before reinventing the wheel...
> 

OK will do.
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