diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/0008-PCI-mvebu-Check-that-PCI-bridge-specified-in-DT-has-.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/0008-PCI-mvebu-Check-that-PCI-bridge-specified-in-DT-has-.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/0008-PCI-mvebu-Check-that-PCI-bridge-specified-in-DT-has-.patch b/pkgs/patches-linux-5.15/0008-PCI-mvebu-Check-that-PCI-bridge-specified-in-DT-has-.patch new file mode 100644 index 0000000..3b943f7 --- /dev/null +++ b/pkgs/patches-linux-5.15/0008-PCI-mvebu-Check-that-PCI-bridge-specified-in-DT-has-.patch @@ -0,0 +1,38 @@ +From 978d8acb29959079c59f700fbd9df105147a3c44 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Fri, 17 Sep 2021 11:39:48 +0200 +Subject: [PATCH 08/90] PCI: mvebu: Check that PCI bridge specified in DT has + function number zero +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Driver cannot handle PCI bridges at non-zero function address. So add +appropriate check. Currently all in-tree kernel DTS files set PCI bridge +function to zero. + +Signed-off-by: Pali Rohár <pali@kernel.org> +Cc: stable@vger.kernel.org +--- + drivers/pci/controller/pci-mvebu.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c +index e4c6dc73159f..b0965067e4ce 100644 +--- a/drivers/pci/controller/pci-mvebu.c ++++ b/drivers/pci/controller/pci-mvebu.c +@@ -946,6 +946,11 @@ static int mvebu_pcie_parse_port(struct mvebu_pcie *pcie, + port->devfn = of_pci_get_devfn(child); + if (port->devfn < 0) + goto skip; ++ if (PCI_FUNC(port->devfn) != 0) { ++ dev_err(dev, "%s: invalid function number, must be zero\n", ++ port->name); ++ goto skip; ++ } + + ret = mvebu_get_tgt_attr(dev->of_node, port->devfn, IORESOURCE_MEM, + &port->mem_target, &port->mem_attr); +-- +2.34.1 + |