Re: [PATCH] s390: export ipl device parameters

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Sep 26, 2005 at 11:15:37AM +0200, Heiko Carstens wrote:
> Hi,
> 
> > > +#ifdef CONFIG_SYSFS
> > Does anyone build a s390 kernel without sysfs?  You can probably just
> > drop this ifdef.
> 
> Yes, you're right.
> 
> > > +DEFINE_IPL_ATTR(lun, "0x%016llx\n", (unsigned long long)
> > > +DEFINE_IPL_ATTR(bootprog, "%lld\n", (unsigned long long)
> > Why have a format field, if you only use the same format?
> 
> I use two different formats (hexadecimal and decimal).

Sorry, I was referring to the (unsigned long long) duplication there,
not the format field.

> > > +	__ATTR(device, S_IRUGO, ipl_device_show, NULL);
> > Why not use __ATTR_RO() like you did above?
> 
> The name of the attribute is supposed to be 'device'. If I would use
> __ATTR_RO it stringifies the first parameter and the result would be
> 'ipl_device' because of the function name I use.
> Otherwise I would have to rename my function, which is something I
> don't want to do. Somehow __ATTR_RO doesn't fit.

Ok, fair enough.

> > > +#define IPL_PARMBLOCK_ORIGIN	0x2000
> > You are just directly addressing memory with this address, right?
> 
> Yes.
> 
> > Shouldn't you iomap it or something first?
> 
> No, we don't have memory mapped IO on S390.

Neither do we on x86, yet we force everyone to use the proper function
calls, for when that code is then ported to other arches.  No reason
s390 should be alone with getting away from that :)

> How about this:
> 
> From: Heiko Carstens <[email protected]>
> 
> Remove unnecessary ifdef + unused variable.

<snip>

Looks fine to me.

thanks,

greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux