summaryrefslogtreecommitdiffstats
path: root/kernel/irq
diff options
context:
space:
mode:
authorMarc Zyngier <marc.zyngier@arm.com>2018-10-01 11:05:21 +0100
committerThomas Gleixner <tglx@linutronix.de>2018-10-01 12:24:53 +0200
commit513145ea66af95f1a5c744d7b5a4f4a97625e669 (patch)
tree1b30faa7c19fab358c4d291083ffafbff1df405d /kernel/irq
parent17b57b1883c1285f3d0dc2266e8f79286a7bef38 (diff)
downloadlinux-513145ea66af95f1a5c744d7b5a4f4a97625e669.tar.bz2
genirq/debugfs: Reset domain debugfs_file on removal of the debugfs file
When removing a debugfs file for a given irq domain, we fail to clear the corresponding field, meaning that the corresponding domain won't be created again if we need to do so. It turns out that this is exactly what irq_domain_update_bus_token does (delete old file, update domain name, recreate file). This doesn't have any impact other than making debug more difficult, but we do value ease of debugging... So clear the debugfs_file field. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20181001100522.180054-2-marc.zyngier@arm.com
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/irqdomain.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 5d9fc01b60a6..95a0acbdd4e6 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -1741,6 +1741,7 @@ static void debugfs_add_domain_dir(struct irq_domain *d)
static void debugfs_remove_domain_dir(struct irq_domain *d)
{
debugfs_remove(d->debugfs_file);
+ d->debugfs_file = NULL;
}
void __init irq_domain_debugfs_init(struct dentry *root)