On Mon, Oct 27, 2014 at 03:48:47PM +0800, Yijing Wang wrote:
> Thierry introduced MSI chip(now renamed to MSI controller)
> framework to associate MSI chip and PCI bus in arm.
> Other platforms still use its own arch MSI functions to
> support MSI capability. Thierry introduced the bus->msi
> assignment to make child bus can inherit bus->msi from the parent.
> But in fact, drivers which used MSI chip always associate
> MSI chip and PCI bus by add .add_bus() in arm PCI host bridge
> drivers. Now we have saved MSI chip in pci_sys_data.
> We can remove this bus->msi assignment safely.
>
> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
> CC: Thierry Reding <thierry.reding@xxxxxxxxx>
> CC: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/pci/msi.c | 5 -----
> drivers/pci/probe.c | 1 -
> 2 files changed, 0 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
> index f085f7f..27b6a54 100644
> --- a/drivers/pci/msi.c
> +++ b/drivers/pci/msi.c
> @@ -37,11 +37,6 @@ struct msi_controller * __weak pcibios_msi_controller(struct pci_bus *bus)
>
> struct msi_controller *pci_msi_controller(struct pci_bus *bus)
> {
> - struct msi_controller *ctrl = bus->msi;
> -
> - if (ctrl)
> - return ctrl;
> -
> return pcibios_msi_controller(bus);
> }
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 5ed9930..4b18bf2 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -682,7 +682,6 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
>
> child->parent = parent;
> child->ops = parent->ops;
> - child->msi = parent->msi;
Does this mean that struct pci_bus.msi is now unused? If not, where is it
still used?
> child->sysdata = parent->sysdata;
> child->bus_flags = parent->bus_flags;
>
> --
> 1.7.1
>
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