From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Linton Subject: [PATCH] Fix pSeries boot failure, by returning interrupt controller node when an interrupt-map property doesn't exist Date: Mon, 29 Jun 2015 18:50:55 -0500 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org Cc: robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org List-Id: devicetree@vger.kernel.org This is a reformat of the patch attached to "pSeries boot failure due to wrong interrupt controller". It allows of_irq_parse_raw() to return the node pointer of the interrupt controller, rather than the parent bus. This allows ics_rtas_host_match() to detect that the controller is a legacy 8259 and avoid using xics. This avoids an RTAS assertion/crash during early kernel bootstrapping. Signed-off-by: Jeremy Linton --- drivers/of/irq.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 1a79806..cb4b9ae 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -252,8 +252,6 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq) * Successfully parsed an interrrupt-map translation; copy new * interrupt specifier into the out_irq structure */ - out_irq->np = newpar; - match_array = imap - newaddrsize - newintsize; for (i = 0; i < newintsize; i++) out_irq->args[i] = be32_to_cpup(imap - newintsize + i); @@ -262,6 +260,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq) skiplevel: /* Iterate again with new parent */ + out_irq->np = newpar; pr_debug(" -> new parent: %s\n", of_node_full_name(newpar)); of_node_put(ipar); ipar = newpar; -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html