From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, linuxppc-dev@lists.ozlabs.org
Cc: benh@kernel.crashing.org, mpe@ellerman.id.au, alistair@popple.id.au
Subject: Re: [PATCH v9 20/26] powerpc/pci: Move pci_find_bus_by_node() around
Date: Thu, 5 May 2016 13:07:17 +1000 [thread overview]
Message-ID: <6cfcdcc9-ae76-a195-001a-9d85c03c389e@ozlabs.ru> (raw)
In-Reply-To: <1462254105-24128-21-git-send-email-gwshan@linux.vnet.ibm.com>
On 05/03/2016 03:41 PM, Gavin Shan wrote:
> This moves pci_find_bus_by_node() from arch/powerpc/platforms/
> pseries/pci_dlpar.c to arch/powerpc/kernel/pci-hotplug.c so that
> the function can be used by pSeries and PowerNV platform at the
> same time. Also, below cleanup applied. No functional changes
> introduced.
>
> * Remove variable "busdn" in find_bus_among_children()
> * Use PCI_DN() to convert device node to pci_dn
>
> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> ---
> arch/powerpc/kernel/pci-hotplug.c | 29 ++++++++++++++++++++++++++++
> arch/powerpc/platforms/pseries/pci_dlpar.c | 31 ------------------------------
> 2 files changed, 29 insertions(+), 31 deletions(-)
>
> diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c
> index 2d108e5..46587a1 100644
> --- a/arch/powerpc/kernel/pci-hotplug.c
> +++ b/arch/powerpc/kernel/pci-hotplug.c
> @@ -21,6 +21,35 @@
> #include <asm/firmware.h>
> #include <asm/eeh.h>
>
> +static struct pci_bus *find_bus_among_children(struct pci_bus *bus,
> + struct device_node *dn)
> +{
> + struct pci_bus *child = NULL;
> + struct pci_bus *tmp;
> +
> + if (pci_bus_to_OF_node(bus) == dn)
> + return bus;
> +
> + list_for_each_entry(tmp, &bus->children, node) {
> + child = find_bus_among_children(tmp, dn);
> + if (child)
> + break;
> + }
> +
> + return child;
> +}
> +
> +struct pci_bus *pci_find_bus_by_node(struct device_node *dn)
> +{
> + struct pci_dn *pdn = PCI_DN(dn);
> +
> + if (!pdn || !pdn->phb || !pdn->phb->bus)
> + return NULL;
> +
> + return find_bus_among_children(pdn->phb->bus, dn);
> +}
> +EXPORT_SYMBOL_GPL(pci_find_bus_by_node);
> +
> /**
> * pcibios_release_device - release PCI device
> * @dev: PCI device
> diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
> index aee22b4..906dbaa 100644
> --- a/arch/powerpc/platforms/pseries/pci_dlpar.c
> +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
> @@ -34,37 +34,6 @@
>
> #include "pseries.h"
>
> -static struct pci_bus *
> -find_bus_among_children(struct pci_bus *bus,
> - struct device_node *dn)
> -{
> - struct pci_bus *child = NULL;
> - struct pci_bus *tmp;
> - struct device_node *busdn;
> -
> - busdn = pci_bus_to_OF_node(bus);
> - if (busdn == dn)
> - return bus;
> -
> - list_for_each_entry(tmp, &bus->children, node) {
> - child = find_bus_among_children(tmp, dn);
> - if (child)
> - break;
> - };
> - return child;
> -}
> -
> -struct pci_bus *pci_find_bus_by_node(struct device_node *dn)
> -{
> - struct pci_dn *pdn = dn->data;
> -
> - if (!pdn || !pdn->phb || !pdn->phb->bus)
> - return NULL;
> -
> - return find_bus_among_children(pdn->phb->bus, dn);
> -}
> -EXPORT_SYMBOL_GPL(pci_find_bus_by_node);
> -
> struct pci_controller *init_phb_dynamic(struct device_node *dn)
> {
> struct pci_controller *phb;
>
--
Alexey
next prev parent reply other threads:[~2016-05-05 3:07 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 5:41 [PATCH v9 00/26] powerpc/powernv: PCI hotplug preparation Gavin Shan
2016-05-03 5:41 ` [PATCH v9 01/26] powerpc/pci: Cleanup on struct pci_controller_ops Gavin Shan
2016-05-10 21:48 ` [v9,01/26] " Michael Ellerman
2016-05-03 5:41 ` [PATCH v9 02/26] powerpc/powernv: Cleanup on pci_controller_ops instances Gavin Shan
2016-05-05 4:07 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 03/26] powerpc/powernv: Drop phb->bdfn_to_pe() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 04/26] powerpc/powernv: Reorder fields in struct pnv_phb Gavin Shan
2016-05-03 5:41 ` [PATCH v9 05/26] powerpc/powernv: Rename PE# " Gavin Shan
2016-05-03 5:41 ` [PATCH v9 06/26] powerpc/powernv: Data type unsigned int for PE number Gavin Shan
2016-05-04 3:31 ` Alistair Popple
2016-05-04 8:39 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 07/26] powerpc/powernv: Fix initial IO and M32 segmap Gavin Shan
2016-05-04 3:31 ` Alistair Popple
2016-05-04 4:38 ` Gavin Shan
2016-05-05 2:06 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 08/26] powerpc/powernv: Simplify pnv_ioda_setup_pe_seg() Gavin Shan
2016-05-04 3:45 ` Alistair Popple
2016-05-05 2:11 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 09/26] powerpc/powernv: IO and M32 mapping based on PCI device resources Gavin Shan
2016-05-05 2:57 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 10/26] powerpc/powernv: Track M64 segment consumption Gavin Shan
2016-05-03 5:41 ` [PATCH v9 11/26] powerpc/powernv: Rename M64 related functions Gavin Shan
2016-05-03 5:41 ` [PATCH v9 12/26] powerpc/powernv/ioda1: M64 support on P7IOC Gavin Shan
2016-05-04 5:17 ` Alistair Popple
2016-05-04 6:48 ` Gavin Shan
2016-05-04 23:53 ` Alistair Popple
2016-05-05 0:40 ` Gavin Shan
2016-05-05 1:03 ` Alistair Popple
2016-05-05 2:28 ` Gavin Shan
2016-05-05 2:02 ` [PATCH v10 " Gavin Shan
2016-05-05 2:41 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 13/26] powerpc/powernv/ioda1: Rename pnv_pci_ioda_setup_dma_pe() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 14/26] powerpc/powernv/ioda1: Introduce PNV_IODA1_DMA32_SEGSIZE Gavin Shan
2016-05-04 4:02 ` Alistair Popple
2016-05-05 2:48 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 15/26] powerpc/powernv: Remove DMA32 PE list Gavin Shan
2016-05-03 5:41 ` [PATCH v9 16/26] powerpc/powernv/ioda1: Improve DMA32 segment track Gavin Shan
2016-05-04 13:20 ` Gavin Shan
2016-05-05 1:55 ` Gavin Shan
2016-05-05 2:04 ` [PATCH v10 " Gavin Shan
2016-05-05 4:03 ` Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 17/26] powerpc/powernv: Use PE instead of number during setup and release Gavin Shan
2016-05-03 5:41 ` [PATCH v9 18/26] powerpc/pci: Rename pcibios_{add, remove}_pci_devices() Gavin Shan
2016-05-04 4:10 ` Alistair Popple
2016-05-04 4:53 ` [PATCH v9 18/26] powerpc/pci: Rename pcibios_{add,remove}_pci_devices() Gavin Shan
2016-05-04 4:43 ` [PATCH v9 18/26] powerpc/pci: Rename pcibios_{add, remove}_pci_devices() Andrew Donnellan
2016-05-05 3:06 ` [PATCH v9 18/26] powerpc/pci: Rename pcibios_{add,remove}_pci_devices() Alexey Kardashevskiy
2016-05-03 5:41 ` [PATCH v9 19/26] powerpc/pci: Rename pcibios_find_pci_bus() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 20/26] powerpc/pci: Move pci_find_bus_by_node() around Gavin Shan
2016-05-04 4:46 ` Andrew Donnellan
2016-05-05 3:07 ` Alexey Kardashevskiy [this message]
2016-05-03 5:41 ` [PATCH v9 21/26] powerpc/pci: Export pci_add_device_node_info() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 22/26] powerpc/pci: Introduce pci_remove_device_node_info() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 23/26] powerpc/pci: Export pci_traverse_device_nodes() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 24/26] powerpc/pci: Don't scan empty slot Gavin Shan
2016-05-03 5:41 ` [PATCH v9 25/26] powerpc/powernv: Simplify pnv_eeh_reset() Gavin Shan
2016-05-03 5:41 ` [PATCH v9 26/26] powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus() Gavin Shan
2016-05-12 3:48 ` Gavin Shan
2016-05-12 11:35 ` Michael Ellerman
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