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authorGrant Likely <grant.likely@secretlab.ca>2012-03-29 14:10:30 -0600
committerGrant Likely <grant.likely@secretlab.ca>2012-03-29 14:31:02 -0600
commit092b2fb0766e7a0bf2e50d9cdd7d3b6bb5d12e19 (patch)
treedafeb26d9e12262c602469a2bc7e5484ab1ce188 /kernel/irq
parentb5174fa3a7f4f8f150bfa3b917c92608953dfa0f (diff)
irqdomain: Remove powerpc dependency from debugfs file
The debugfs code is really generic for all platforms. This patch removes the powerpc-specific directory reference and makes it available to all architectures. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/Kconfig10
-rw-r--r--kernel/irq/irqdomain.c8
2 files changed, 14 insertions, 4 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 5a38bf4de64..d8e323d1249 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -56,6 +56,16 @@ config GENERIC_IRQ_CHIP
config IRQ_DOMAIN
bool
+config IRQ_DOMAIN_DEBUG
+ bool "Expose hardware/virtual IRQ mapping via debugfs"
+ depends on IRQ_DOMAIN && DEBUG_FS
+ help
+ This option will show the mapping relationship between hardware irq
+ numbers and Linux irq numbers. The mapping is exposed via debugfs
+ in the file "virq_mapping".
+
+ If you don't know what this means you don't need it.
+
# Support forced irq threading
config IRQ_FORCED_THREADING
bool
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index af48e59bc2f..3601f3fbf67 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -632,7 +632,7 @@ unsigned int irq_linear_revmap(struct irq_domain *domain,
return revmap[hwirq];
}
-#ifdef CONFIG_VIRQ_DEBUG
+#ifdef CONFIG_IRQ_DOMAIN_DEBUG
static int virq_debug_show(struct seq_file *m, void *private)
{
unsigned long flags;
@@ -668,7 +668,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
data = irq_desc_get_chip_data(desc);
seq_printf(m, "0x%16p ", data);
- if (desc->irq_data.domain->of_node)
+ if (desc->irq_data.domain && desc->irq_data.domain->of_node)
p = desc->irq_data.domain->of_node->full_name;
else
p = none;
@@ -695,14 +695,14 @@ static const struct file_operations virq_debug_fops = {
static int __init irq_debugfs_init(void)
{
- if (debugfs_create_file("virq_mapping", S_IRUGO, powerpc_debugfs_root,
+ if (debugfs_create_file("irq_domain_mapping", S_IRUGO, NULL,
NULL, &virq_debug_fops) == NULL)
return -ENOMEM;
return 0;
}
__initcall(irq_debugfs_init);
-#endif /* CONFIG_VIRQ_DEBUG */
+#endif /* CONFIG_IRQ_DOMAIN_DEBUG */
int irq_domain_simple_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)