diff options
| author | Kunwu Chan <[email protected]> | 2024-08-23 15:42:01 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <[email protected]> | 2024-08-23 12:46:22 -0500 |
| commit | 8a48281cfa7f380707d42b649acda3ea36348697 (patch) | |
| tree | ef43805fb22d10b36edf30f0f12e744c96382dd0 | |
| parent | dbc3171194403d0d40e4bdeae666f6e76e428b53 (diff) | |
PCI: Make pci_bus_type constant
Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a
const *"), the driver core can properly handle constant struct bus_type,
move the pci_bus_type variable to be a constant structure as well, placing
it into read-only memory which can not be modified at runtime.
Link: https://lore.kernel.org/r/[email protected]
Suggested-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Kunwu Chan <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/pci/pci-driver.c | 2 | ||||
| -rw-r--r-- | include/linux/pci.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index f412ef73a6e4..35270172c833 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -1670,7 +1670,7 @@ static void pci_dma_cleanup(struct device *dev) iommu_device_unuse_default_domain(dev); } -struct bus_type pci_bus_type = { +const struct bus_type pci_bus_type = { .name = "pci", .match = pci_bus_match, .uevent = pci_uevent, diff --git a/include/linux/pci.h b/include/linux/pci.h index 4cf89a4b4cbc..197292b336a5 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1098,7 +1098,7 @@ enum pcie_bus_config_types { extern enum pcie_bus_config_types pcie_bus_config; -extern struct bus_type pci_bus_type; +extern const struct bus_type pci_bus_type; /* Do NOT directly access these two variables, unless you are arch-specific PCI * code, or PCI core code. */ |