Commit 11c2bf4a authored by Pali Rohár's avatar Pali Rohár Committed by Lorenzo Pieralisi
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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: default avatarPali Rohár <pali@kernel.org>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
parent 489bfc51

drivers/pci/controller/pci-mvebu.c

+3 −0
Original line number Diff line number Diff line
@@ -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;