On Fri, Aug 23, 2024 at 03:42:01PM +0800, Kunwu Chan wrote:
> From: Kunwu Chan <chentao@xxxxxxxxxx>
>
> 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.
>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
>
> Signed-off-by: Kunwu Chan <chentao@xxxxxxxxxx>
Applied to pci/misc for v6.12, thanks!
> ---
> drivers/pci/pci-driver.c | 2 +-
> 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 4246cb790c7b..0d6c1c089aca 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. */
> --
> 2.41.0
>
