lkml.org 
[lkml]   [2015]   [Oct]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
Subjectof_mdiobus_register_phy() and deferred probe
From
Hi,

Due to a probe deferral of an interrupt controller[1], the Micrel
Ethernet PHY on
r8a7791/koelsch started failing to get its IRQ:

no irq domain found for /interrupt-controller@e61c0000 !

However, of_mdiobus_register_phy() uses irq_of_parse_and_map(), which plainly
ignores EPROBE_DEFER, and it just continues.

Later I get:

sh-eth ee700000.ethernet eth0: attached PHY 1 (IRQ -1) to driver
Micrel KSZ8041RNLI

instead of

sh-eth ee700000.ethernet eth0: attached PHY 1 (IRQ 408) to driver
Micrel KSZ8041RNLI

Ethernet still works, as the interrupt seems to be unneeded(?).

Has anyone already looked into fixing of_mdio to handle deferred probing?

Thanks!

References:
[1] "Re: [PATCH v4 5/5] [RFC] clk: shmobile: r8a7795: Add new CPG/MSSR driver"
(http://article.gmane.org/gmane.linux.ports.sh.devel/49979)

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds


\
 
 \ /
  Last update: 2015-10-22 16:01    [W:0.220 / U:0.232 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site