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From 600952067c786972461d1ec16bfd71221066341f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
Date: Fri, 12 Aug 2022 11:09:11 +0200
Subject: [PATCH 56/90] PCI: mvebu: Fix endianity when accessing pci emul
bridge members
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
PCI emul bridge members iolimitupper, iobaseupper, memlimit and membase are
of type __le16, so correctly access these members via le16_to_cpu() macros.
Fixes: 4ded69473adb ("PCI: mvebu: Propagate errors when updating PCI_IO_BASE and PCI_MEM_BASE registers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pali Rohár <pali@kernel.org>
---
drivers/pci/controller/pci-mvebu.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index 0122c65b0269..c5e5bc085a9d 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -528,7 +528,7 @@ static int mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
/* Are the new iobase/iolimit values invalid? */
if (conf->iolimit < conf->iobase ||
- conf->iolimitupper < conf->iobaseupper)
+ le16_to_cpu(conf->iolimitupper) < le16_to_cpu(conf->iobaseupper))
return mvebu_pcie_set_window(port, port->io_target, port->io_attr,
&desired, &port->iowin);
@@ -540,10 +540,10 @@ static int mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
* is the CPU address.
*/
desired.remap = ((conf->iobase & 0xF0) << 8) |
- (conf->iobaseupper << 16);
+ (le16_to_cpu(conf->iobaseupper) << 16);
desired.base = port->pcie->io.start + desired.remap;
desired.size = ((0xFFF | ((conf->iolimit & 0xF0) << 8) |
- (conf->iolimitupper << 16)) -
+ (le16_to_cpu(conf->iolimitupper) << 16)) -
desired.remap) +
1;
@@ -557,7 +557,7 @@ static int mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
struct pci_bridge_emul_conf *conf = &port->bridge.conf;
/* Are the new membase/memlimit values invalid? */
- if (conf->memlimit < conf->membase)
+ if (le16_to_cpu(conf->memlimit) < le16_to_cpu(conf->membase))
return mvebu_pcie_set_window(port, port->mem_target, port->mem_attr,
&desired, &port->memwin);
@@ -567,8 +567,8 @@ static int mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
* window to setup, according to the PCI-to-PCI bridge
* specifications.
*/
- desired.base = ((conf->membase & 0xFFF0) << 16);
- desired.size = (((conf->memlimit & 0xFFF0) << 16) | 0xFFFFF) -
+ desired.base = ((le16_to_cpu(conf->membase) & 0xFFF0) << 16);
+ desired.size = (((le16_to_cpu(conf->memlimit) & 0xFFF0) << 16) | 0xFFFFF) -
desired.base + 1;
return mvebu_pcie_set_window(port, port->mem_target, port->mem_attr, &desired,
--
2.34.1
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