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authorGrant Likely <grant.likely@secretlab.ca>2012-02-24 08:07:06 -0700
committerGrant Likely <grant.likely@secretlab.ca>2012-02-24 09:47:23 -0700
commitabd2363f6a5f1030b935e0bdc15cf917313b3b10 (patch)
tree1f4546497af8162a60573203c5b017e2f7fed1f5 /kernel/irq/irqdomain.c
parentb4e518547da042fdc65bd4bdafd046fed13337d5 (diff)
irq_domain/mips: Allow irq_domain on MIPS
This patch makes IRQ_DOMAIN usable on MIPS. It uses an ugly workaround to preserve current behaviour so that MIPS has time to add irq_domain registration to the irq controller drivers. The workaround will be removed in Linux v3.6 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org
Diffstat (limited to 'kernel/irq/irqdomain.c')
-rw-r--r--kernel/irq/irqdomain.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 25a498eb98a3..af48e59bc2ff 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -411,6 +411,18 @@ unsigned int irq_create_of_mapping(struct device_node *controller,
domain = controller ? irq_find_host(controller) : irq_default_domain;
if (!domain) {
+#ifdef CONFIG_MIPS
+ /*
+ * Workaround to avoid breaking interrupt controller drivers
+ * that don't yet register an irq_domain. This is temporary
+ * code. ~~~gcl, Feb 24, 2012
+ *
+ * Scheduled for removal in Linux v3.6. That should be enough
+ * time.
+ */
+ if (intsize > 0)
+ return intspec[0];
+#endif
printk(KERN_WARNING "irq: no irq domain found for %s !\n",
controller->full_name);
return 0;