lkml.org 
[lkml]   [2020]   [Dec]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v2 10/10] ARM: mstar: SMP support
Hi Russell,

On Wed, 2 Dec 2020 at 00:04, Russell King - ARM Linux admin
<linux@armlinux.org.uk> wrote:
>
> On Tue, Dec 01, 2020 at 10:43:30PM +0900, Daniel Palmer wrote:
> > + np = of_find_compatible_node(NULL, NULL, "mstar,smpctrl");
> > + smpctrl = of_iomap(np, 0);
> > +
> > + if (!smpctrl)
> > + return -ENODEV;
>
> Wouldn't -ENOMEM be more appropriate here?

There seems to be examples of both -ENOMEM and -ENODEV in other ARM platforms.
arch/arm/mach-aspeed/platsmp.c uses -ENODEV for example.

I went with -ENODEV there as the source of the error is most likely
the node not being in the device tree.
I didn't check the result of of_find_compatible_node() because for the
memory barrier code in the same file I was told it wasn't necessary.

Thanks,

Daniel

\
 
 \ /
  Last update: 2020-12-02 10:13    [W:0.075 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site