5.15-stable patches

added patches:
	pci-host-common-request-bus-reassignment-when-not-probe-only.patch

diff --git a/queue-5.15/pci-host-common-request-bus-reassignment-when-not-probe-only.patch b/queue-5.15/pci-host-common-request-bus-reassignment-when-not-probe-only.patch
new file mode 100644 (file)
index 0000000..64f0f50
--- /dev/null
+++ b/queue-5.15/pci-host-common-request-bus-reassignment-when-not-probe-only.patch
@@ -0,0 +1,47 @@
+From fda8749ba73638f5bbca3ffb39bc6861eb3b23fa Mon Sep 17 00:00:00 2001
+From: Ratheesh Kannoth <rkannoth@marvell.com>
+Date: Tue, 14 Apr 2026 13:47:30 +0530
+Subject: PCI: host-common: Request bus reassignment when not probe-only
+
+From: Ratheesh Kannoth <rkannoth@marvell.com>
+
+commit fda8749ba73638f5bbca3ffb39bc6861eb3b23fa upstream.
+
+pci_host_common_init() is used by several generic ECAM host drivers.
+After PCI core changes around pci_flags and preserve_config, these hosts
+no longer opted into full bus number reassignment the way they did
+before, which broke enumeration of devices on a Marvell CN106XX board.
+
+When PCI_PROBE_ONLY is not set, add PCI_REASSIGN_ALL_BUS so
+pci_scan_bridge_extend() takes the reassignment path: bus numbers can be
+assigned from firmware EA data (e.g. pci_ea_fixed_busnrs()). Skip the
+flag in probe-only mode so existing assignments are not overridden.
+
+Fixes: 7246a4520b4b ("PCI: Use preserve_config in place of pci_flags")
+Closes: https://lore.kernel.org/all/abkqm_LCd9zAM8cW@rkannoth-OptiPlex-7090/
+Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
+[mani: added stable tag]
+Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
+[bhelgaas: add problem report link]
+Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
+Cc: stable@vger.kernel.org
+Cc: Vidya Sagar <vidyas@nvidia.com>
+Link: https://patch.msgid.link/20260414081730.3864372-1-rkannoth@marvell.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/pci/controller/pci-host-common.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/pci/controller/pci-host-common.c
++++ b/drivers/pci/controller/pci-host-common.c
+@@ -77,6 +77,10 @@ int pci_host_common_probe(struct platfor
+       if (!pci_has_flag(PCI_PROBE_ONLY))
+               pci_add_flags(PCI_REASSIGN_ALL_BUS);
+ 
++      /* Do not reassign bus numbers if probe only */
++      if (!pci_has_flag(PCI_PROBE_ONLY))
++              pci_add_flags(PCI_REASSIGN_ALL_BUS);
++
+       bridge->sysdata = cfg;
+       bridge->ops = (struct pci_ops *)&ops->pci_ops;
+       bridge->msi_domain = true;

diff --git a/queue-5.15/series b/queue-5.15/series
index 07cb6c18e89f039ad83ad0d4d5f106f366ecbf4c..9c259af35d0bc912604428516038803ba78e340b 100644 (file)
--- a/queue-5.15/series
+++ b/queue-5.15/series
@@ -81,3 +81,4 @@ binder-fix-uaf-in-binder_thread_release.patch
 binder-fix-uaf-in-binder_free_transaction.patch
 usb-xhci-fix-sleep-in-atomic-context-in-xhci_free_streams.patch
 pci-altera-do-not-dispose-parent-irq-mapping.patch
+pci-host-common-request-bus-reassignment-when-not-probe-only.patch