linux-kernel - [tip: irq/msi] genirq/irqdomain: Remove the param count restriction from select()

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Date: Thu, 15 Feb 2024 19:57:04 -0000
From: "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, Anup Patel <apatel@...tanamicro.com>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: irq/msi] genirq/irqdomain: Remove the param count restriction
 from select()

The following commit has been merged into the irq/msi branch of tip:

Commit-ID:     de1ff306dcf4546d6a8863b1f956335e0d3fbb9b
Gitweb:        https://git.kernel.org/tip/de1ff306dcf4546d6a8863b1f956335e0d3fbb9b
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Sat, 27 Jan 2024 21:47:30 +05:30
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Thu, 15 Feb 2024 17:55:39 +01:00

genirq/irqdomain: Remove the param count restriction from select()

Now that the GIC-v3 callback can handle invocation with a fwspec parameter
count of 0 lift the restriction in the core code and invoke select()
unconditionally when the domain provides it.

Preparatory change for per device MSI domains.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Anup Patel <apatel@...tanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20240127161753.114685-3-apatel@ventanamicro.com

---
 kernel/irq/irqdomain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 0bdef4f..8fee379 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -448,7 +448,7 @@ struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
 	 */
 	mutex_lock(&irq_domain_mutex);
 	list_for_each_entry(h, &irq_domain_list, link) {
-		if (h->ops->select && fwspec->param_count)
+		if (h->ops->select)
 			rc = h->ops->select(h, fwspec, bus_token);
 		else if (h->ops->match)
 			rc = h->ops->match(h, to_of_node(fwnode), bus_token);