linux-kernel - [PATCH v4] char: xillybus: Replace deprecated MSI API

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Message-ID: <aHskWESzZdyBFj4x@pc>
Date: Sat, 19 Jul 2025 05:51:36 +0100
From: Salah Triki <salah.triki@...il.com>
To: Eli Billauer <eli.billauer@...il.com>, Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4] char: xillybus: Replace deprecated MSI API

Replace deprecated pci_enable_msi() with pci_alloc_irq_vectors().

Signed-off-by: Salah Triki <salah.triki@...il.com>
---
Changes in v4:
   - Drop devm_add_action() since it is useless

Changes in v3:
    - Some checkpatch cleanups

Changes in v2:
    - Replace PCI_IRQ_ALL_TYPES with PCI_IRQ_MSI
    - Delete pci_free_irq_vectors(pdev) in remove function
    - Add devm action that calls pci_free_irq_vectors(pdev)

 drivers/char/xillybus/xillybus_pcie.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/char/xillybus/xillybus_pcie.c b/drivers/char/xillybus/xillybus_pcie.c
index 9858711e3e79..c8b4cdfe695a 100644
--- a/drivers/char/xillybus/xillybus_pcie.c
+++ b/drivers/char/xillybus/xillybus_pcie.c
@@ -76,7 +76,8 @@ static int xilly_probe(struct pci_dev *pdev,
 	pci_set_master(pdev);
 
 	/* Set up a single MSI interrupt */
-	if (pci_enable_msi(pdev)) {
+	rc = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
+	if (rc < 0) {
 		dev_err(endpoint->dev,
 			"Failed to enable MSI interrupts. Aborting.\n");
 		return -ENODEV;
-- 
2.43.0