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authorJeremy Linton <lintonrjeremy@gmail.com>2015-06-30 02:50:55 +0300
committerGrant Likely <grant.likely@linaro.org>2015-06-30 18:55:30 +0300
commitd23b251669e20b3989643d9c38228039c510478f (patch)
treec0561c2213aea378363871d68190fb21d503bcc6 /drivers/of/irq.c
parentbecfc3c86df963491ff1d5ffc6131a06af6bb851 (diff)
downloadlinux-d23b251669e20b3989643d9c38228039c510478f.tar.xz
of/irq: Fix pSeries boot failure
of_irq_parse_raw() needs to return the correct interrupt controller node when an interrupt-map property doesn't exist. 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 <lintonrjeremy@gmail.com> Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r--drivers/of/irq.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 1a7980692f25..cb4b9aeaa10d 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;