From: Milton Miller <miltonm@bga.com>
Date: Tue, 24 May 2011 20:34:17 +0000 (+0000)
Subject: powerpc/irq: Always free duplicate IRQ_LEGACY hosts
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3d1b5e206a4f0ce46f2aa138590738c5d8e118ac;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

powerpc/irq: Always free duplicate IRQ_LEGACY hosts

Since kmem caches are allocated before init_IRQ as noted in 3af259d155
(powerpc: Radix trees are available before init_IRQ), we now call
kmalloc in all cases and can can always call kfree if we are asked
to allocate a duplicate or conflicting IRQ_HOST_MAP_LEGACY host.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index f2fd6539d8bf..0df255414836 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -557,15 +557,8 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
 	if (revmap_type == IRQ_HOST_MAP_LEGACY) {
 		if (irq_map[0].host != NULL) {
 			raw_spin_unlock_irqrestore(&irq_big_lock, flags);
-			/* If we are early boot, we can't free the structure,
-			 * too bad...
-			 * this will be fixed once slab is made available early
-			 * instead of the current cruft
-			 */
-			if (mem_init_done) {
-				of_node_put(host->of_node);
-				kfree(host);
-			}
+			of_node_put(host->of_node);
+			kfree(host);
 			return NULL;
 		}
 		irq_map[0].host = host;