From f117e4e1d4d4ba03cdf376392dc996e84c04ddb5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Fri, 17 Sep 2021 13:13:52 +0200 Subject: [PATCH 09/90] PCI: mvebu: Handle invalid size of read config request MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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. Signed-off-by: Pali Rohár Cc: stable@vger.kernel.org --- 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 b0965067e4ce..5bf1889cfb38 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -273,6 +273,9 @@ 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; -- 2.34.1