[PATCH 04/15] PCI: mvebu: Handle invalid size of read config request
From: Pali Rohár <pali@kernel.org>
Date: 2021-11-25 12:48:53
Also in:
linux-pci, lkml
Subsystem:
pci driver for mvebu (marvell armada 370 and armada xp soc support), pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Thomas Petazzoni, Pali Rohár, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
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 <pali@kernel.org> 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 08274132cdfb..19c6ee298442 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c@@ -261,6 +261,9 @@ 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;
--
2.20.1
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