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SubjectRe: [PATCH 00/10] Save MSI chip in pci_sys_data
On Mon, Oct 27, 2014 at 03:48:37PM +0800, Yijing Wang wrote:
> Now PCI host bridge drivers in arm associate MSI chip and
> PCI bus by adding .add_bus(), and assign MSI chip pointer
> to every PCI bus. Associating MSI chip and every PCI bus
> is not necessary. All PCI busses under same PCI host brdige
> share the same MSI chip. So saving MSI chip in pci_sys_data
> is a better solution, it make PCI host bridge drivers clean.
> Because we still need to provide arch spec pcibios_msi_controller()
> to extract MSI controller pointer, a better solution is to
> refactor PCI host bridge, make a generic pci_host_bridge, and
> save common info like PCI domain number, MSI chip, resources
> in it. We will do that work in another series as soon.
>
> To Bjorn: Because struct msi_chip defined in struct hw_pci and pci_sys_data
> is under the #ifdef CONFIG_PCI_MSI, if we use if(IS_ENABLED(CONFIG_PCI_MSI))
> in PCI host bridge drivers, it will cause build errors when the CONFIG_PCI_MSI
> is off. So I keep #ifdef CONFIG_PCI_MSI in this series.
>
> Yijing Wang (10):
> MSI: Rename msi_chip to msi_controller for better readability
> PCI/MSI: Introduce weak pcibios_msi_controller()
> arm/MSI: Save MSI controller in pci_sys_data
> PCI: tegra: Save MSI controller in pci_sys_data
> PCI: designware: Save MSI controller in pci_sys_data
> PCI: rcar: Save MSI controller in pci_sys_data
> PCI: mvebu: Save MSI controller in pci_sys_data
> PCI: xilinx: Save MSI controller in pci_sys_data
> arm/PCI: Clean unused pcibios_add_bus() and pcibios_remove_bus()
> PCI/MSI: Remove useless bus->msi assignment
>
> arch/arm/include/asm/mach/pci.h | 10 +++++---
> arch/arm/kernel/bios32.c | 28 ++++++++++--------------
> drivers/irqchip/irq-armada-370-xp.c | 22 +++++++++---------
> drivers/of/of_pci.c | 40 +++++++++++++++++-----------------
> drivers/pci/host/pci-keystone-dw.c | 4 +-
> drivers/pci/host/pci-keystone.h | 2 +-
> drivers/pci/host/pci-mvebu.c | 14 ++++-------
> drivers/pci/host/pci-tegra.c | 37 +++++++++++++-------------------
> drivers/pci/host/pcie-designware.c | 25 +++++++--------------
> drivers/pci/host/pcie-designware.h | 2 +-
> drivers/pci/host/pcie-rcar.c | 37 +++++++++++++-------------------
> drivers/pci/host/pcie-xilinx.c | 27 +++++++----------------
> drivers/pci/msi.c | 22 ++++++++++++++-----
> drivers/pci/probe.c | 1 -
> include/linux/msi.h | 6 ++--
> include/linux/of_pci.h | 14 ++++++------
> include/linux/pci.h | 2 +-
> 17 files changed, 132 insertions(+), 161 deletions(-)
>

Applied to pci/msi for v3.19, thanks.


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