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powerpc/irq: Always free duplicate IRQ_LEGACY hosts

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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>
This commit is contained in:
Milton Miller 2011-05-24 20:34:17 +00:00 committed by Benjamin Herrenschmidt
parent 8142f032a9
commit 3d1b5e206a
1 changed files with 2 additions and 9 deletions
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arch/powerpc/kernel/irq.c
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@ -557,15 +557,8 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
if (revmap_type == IRQ_HOST_MAP_LEGACY) { if (revmap_type == IRQ_HOST_MAP_LEGACY) {
if (irq_map[0].host != NULL) { if (irq_map[0].host != NULL) {
raw_spin_unlock_irqrestore(&irq_big_lock, flags); raw_spin_unlock_irqrestore(&irq_big_lock, flags);
/* If we are early boot, we can't free the structure, of_node_put(host->of_node);
* too bad... kfree(host);
* 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);
}
return NULL; return NULL;
} }
irq_map[0].host = host; irq_map[0].host = host;