linux-kernel - [tip:irq/urgent] genirq/debugfs: Add missing IRQCHIP_SUPPORTS_LEVEL

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Message-ID: <tip-72a8edc2d9134c2895eac2fec5eecf8230a05c96@git.kernel.org>
Date:   Fri, 22 Jun 2018 05:25:00 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de,
        marc.zyngier@....com, sumit.garg@...aro.org, mingo@...nel.org,
        yangyingliang@...wei.com, hpa@...or.com, jason@...edaemon.net,
        alexandre.belloni@...tlin.com
Subject: [tip:irq/urgent] genirq/debugfs: Add missing
 IRQCHIP_SUPPORTS_LEVEL_MSI debug

Commit-ID:  72a8edc2d9134c2895eac2fec5eecf8230a05c96
Gitweb:     https://git.kernel.org/tip/72a8edc2d9134c2895eac2fec5eecf8230a05c96
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 22 Jun 2018 10:52:48 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 22 Jun 2018 14:22:00 +0200

genirq/debugfs: Add missing IRQCHIP_SUPPORTS_LEVEL_MSI debug

Debug is missing the IRQCHIP_SUPPORTS_LEVEL_MSI debug entry, making debugfs
slightly less useful.

Take this opportunity to also add a missing comment in the definition of
IRQCHIP_SUPPORTS_LEVEL_MSI.

Fixes: 6988e0e0d283 ("genirq/msi: Limit level-triggered MSI to platform devices")
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: Yang Yingliang <yangyingliang@...wei.com>
Cc: Sumit Garg <sumit.garg@...aro.org>
Link: https://lkml.kernel.org/r/20180622095254.5906-2-marc.zyngier@arm.com

---
 include/linux/irq.h  | 1 +
 kernel/irq/debugfs.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 4bd2f34947f4..201de12a9957 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -503,6 +503,7 @@ struct irq_chip {
  * IRQCHIP_SKIP_SET_WAKE:	Skip chip.irq_set_wake(), for this irq chip
  * IRQCHIP_ONESHOT_SAFE:	One shot does not require mask/unmask
  * IRQCHIP_EOI_THREADED:	Chip requires eoi() on unmask in threaded mode
+ * IRQCHIP_SUPPORTS_LEVEL_MSI	Chip can provide two doorbells for Level MSIs
  */
 enum {
 	IRQCHIP_SET_TYPE_MASKED		= (1 <<  0),
diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c
index 4dadeb3d6666..6f636136cccc 100644
--- a/kernel/irq/debugfs.c
+++ b/kernel/irq/debugfs.c
@@ -55,6 +55,7 @@ static const struct irq_bit_descr irqchip_flags[] = {
 	BIT_MASK_DESCR(IRQCHIP_SKIP_SET_WAKE),
 	BIT_MASK_DESCR(IRQCHIP_ONESHOT_SAFE),
 	BIT_MASK_DESCR(IRQCHIP_EOI_THREADED),
+	BIT_MASK_DESCR(IRQCHIP_SUPPORTS_LEVEL_MSI),
 };
 
 static void