From: Pali Rohár Date: Thu, 25 Nov 2021 12:45:54 +0000 (+0100) Subject: PCI: mvebu: Handle invalid size of read config request X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=11c2bf4a20c256eea258a4332244c0deb9af0da8;p=linux.git PCI: mvebu: Handle invalid size of read config request 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 --- 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;