From 11c2bf4a20c256eea258a4332244c0deb9af0da8 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Thu, 25 Nov 2021 13:45:54 +0100 Subject: [PATCH] PCI: mvebu: Handle invalid size of read config request MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Function mvebu_pcie_hw_rd_conf() does not handle invalid size. So correctly set read value to all-ones and return appropriate error return value PCIBIOS_BAD_REGISTER_NUMBER like in mvebu_pcie_hw_wr_conf() function. Link: https://lore.kernel.org/r/20211125124605.25915-5-pali@kernel.org Signed-off-by: Pali Rohár Signed-off-by: Lorenzo Pieralisi --- drivers/pci/controller/pci-mvebu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c index 2a2100c2e65d5..8388a9cc911d2 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -250,6 +250,9 @@ static int mvebu_pcie_hw_rd_conf(struct mvebu_pcie_port *port, case 4: *val = readl_relaxed(conf_data); break; + default: + *val = 0xffffffff; + return PCIBIOS_BAD_REGISTER_NUMBER; } return PCIBIOS_SUCCESSFUL; -- 2.30.2