Patch "PCI: shpchp: Enable bridge bus mastering if MSI is enabled" has been added to the 3.18-stable tree

This is a note to let you know that I've just added the patch titled

PCI: shpchp: Enable bridge bus mastering if MSI is enabled

to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
pci-shpchp-enable-bridge-bus-mastering-if-msi-is-enabled.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Aleksandr Bezzubikov <[email protected]>
Date: Tue, 18 Jul 2017 17:12:25 +0300
Subject: PCI: shpchp: Enable bridge bus mastering if MSI is enabled

From: Aleksandr Bezzubikov <[email protected]>

commit 48b79a14505349a29b3e20f03619ada9b33c4b17 upstream.

An SHPC may generate MSIs to notify software about slot or controller events (SHPC spec r1.0, sec 4.7). A PCI device can only generate an MSI if it has bus mastering enabled.

Enable bus mastering if the bridge contains an SHPC that uses MSI for event notifications.

---
 drivers/pci/hotplug/shpchp_hpc.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1062,6 +1062,8 @@ int shpc_init(struct controller *ctrl, s
 		if (rc) {
 			ctrl_info(ctrl, "Can't get msi for the hotplug controller\n");
 			ctrl_info(ctrl, "Use INTx for the hotplug controller\n");
+		} else {
+			pci_set_master(pdev);
 		}
 
 		rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED,

Patches currently in stable-queue which might be from [email protected] are

queue-3.18/pci-shpchp-enable-bridge-bus-mastering-if-msi-is-enabled.patch