linux-kernel - [PATCH 5.4 55/62] PCI/MSI: Use msi_mask_irq() in pci_msi

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Message-Id: <20210816125430.099643476@linuxfoundation.org>
Date:   Mon, 16 Aug 2021 15:02:27 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>
Subject: [PATCH 5.4 55/62] PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown()

From: Thomas Gleixner <tglx@...utronix.de>

commit d28d4ad2a1aef27458b3383725bb179beb8d015c upstream.

No point in using the raw write function from shutdown. Preparatory change
to introduce proper serialization for the msi_desc::masked cache.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Tested-by: Marc Zyngier <maz@...nel.org>
Reviewed-by: Marc Zyngier <maz@...nel.org>
Cc: stable@...r.kernel.org
Link: https://lore.kernel.org/r/20210729222542.674391354@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/pci/msi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -960,7 +960,7 @@ static void pci_msi_shutdown(struct pci_
 
 	/* Return the device with MSI unmasked as initial states */
 	mask = msi_mask(desc->msi_attrib.multi_cap);
-	__pci_msi_desc_mask_irq(desc, mask, 0);
+	msi_mask_irq(desc, mask, 0);
 
 	/* Restore dev->irq to its default pin-assertion IRQ */
 	dev->irq = desc->msi_attrib.default_irq;