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irqdomain: Remove debugfs_file from struct irq_domain

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There's no need to keep around a dentry pointer to a simple file that
debugfs itself can look up when we need to remove it from the system.
So simplify the code by deleting the variable and cleaning up the logic
around the debugfs file.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/YCvYV53ZdzQSWY6w@kroah.com
This commit is contained in:
Greg Kroah-Hartman
2021-02-16 15:36:07 +01:00
committed by Marc Zyngier
parent a38fd87484
commit 69dd4503a7
2 changed files with 4 additions and 9 deletions
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9
kernel/irq/irqdomain.c
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@@ -1898,16 +1898,15 @@ DEFINE_SHOW_ATTRIBUTE(irq_domain_debug);
static void debugfs_add_domain_dir(struct irq_domain *d)
{
if (!d->name || !domain_dir || d->debugfs_file)
if (!d->name || !domain_dir)
return;
d->debugfs_file = debugfs_create_file(d->name, 0444, domain_dir, d,
&irq_domain_debug_fops);
debugfs_create_file(d->name, 0444, domain_dir, d,
&irq_domain_debug_fops);
}
static void debugfs_remove_domain_dir(struct irq_domain *d)
{
debugfs_remove(d->debugfs_file);
d->debugfs_file = NULL;
debugfs_remove(debugfs_lookup(d->name, domain_dir));
}
void __init irq_domain_debugfs_init(struct dentry *root)