From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Vidya Sagar <vidyas@nvidia.com>
Cc: jingoohan1@gmail.com, gustavo.pimentel@synopsys.com,
bhelgaas@google.com, Jisheng.Zhang@synaptics.com,
thierry.reding@gmail.com, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, kthota@nvidia.com,
mmaddireddy@nvidia.com, sagar.tv@gmail.com
Subject: Re: [PATCH V2 1/2] PCI: dwc: Add API support to de-initialize host
Date: Thu, 2 May 2019 15:58:30 +0100 [thread overview]
Message-ID: <20190502145830.GB19656@e121166-lin.cambridge.arm.com> (raw)
In-Reply-To: <20190416141516.23908-2-vidyas@nvidia.com>
On Tue, Apr 16, 2019 at 07:45:15PM +0530, Vidya Sagar wrote:
> Add an API to group all the tasks to be done to de-initialize host which
> can then be called by any DesignWare core based driver implementations
> while adding .remove() support in their respective drivers.
>
> Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
> ---
> v2:
> * s/Designware/DesignWare
>
> drivers/pci/controller/dwc/pcie-designware-host.c | 7 +++++++
> drivers/pci/controller/dwc/pcie-designware.h | 5 +++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index 3e4169e738a5..d7881490282d 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -516,6 +516,13 @@ int dw_pcie_host_init(struct pcie_port *pp)
> return ret;
> }
>
> +void dw_pcie_host_deinit(struct pcie_port *pp)
> +{
> + pci_stop_root_bus(pp->root_bus);
> + pci_remove_root_bus(pp->root_bus);
> + dw_pcie_free_msi(pp);
This must mirror the init path, so AFAICS it should not be done
if pp->ops->msi_host_init != NULL
Lorenzo
> +}
> +
> static int dw_pcie_access_other_conf(struct pcie_port *pp, struct pci_bus *bus,
> u32 devfn, int where, int size, u32 *val,
> bool write)
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index adff0c713665..ea8d1caf11c5 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -343,6 +343,7 @@ void dw_pcie_msi_init(struct pcie_port *pp);
> void dw_pcie_free_msi(struct pcie_port *pp);
> void dw_pcie_setup_rc(struct pcie_port *pp);
> int dw_pcie_host_init(struct pcie_port *pp);
> +void dw_pcie_host_deinit(struct pcie_port *pp);
> int dw_pcie_allocate_domains(struct pcie_port *pp);
> #else
> static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
> @@ -367,6 +368,10 @@ static inline int dw_pcie_host_init(struct pcie_port *pp)
> return 0;
> }
>
> +static inline void dw_pcie_host_deinit(struct pcie_port *pp)
> +{
> +}
> +
> static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
> {
> return 0;
> --
> 2.17.1
>
next prev parent reply other threads:[~2019-05-02 14:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 14:15 [PATCH V2 0/2] PCI: dwc: Export symbols to support module build Vidya Sagar
2019-04-16 14:15 ` [PATCH V2 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
2019-05-02 14:58 ` Lorenzo Pieralisi [this message]
2019-05-02 17:02 ` Vidya Sagar
2019-04-16 14:15 ` [PATCH V2 2/2] PCI: dwc: Export APIs to support .remove() implementation Vidya Sagar
2019-05-02 14:51 ` Lorenzo Pieralisi
2019-05-02 17:00 ` Vidya Sagar
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