RE: [PATCHv9 02/12] PCI: mobiveil: Move the host initialization into a routine

Z.q. Hou
2020-02-06T11:14:27Z

Hi Andrew,

Thanks a lot for your comments!

> -----Original Message-----
> From: Andrew Murray <andrew.murray@arm.com>
> Sent: 2020年1月13日 18:19
> To: Z.q. Hou <zhiqiang.hou@nxp.com>
> Cc: linux-pci@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> bhelgaas@google.com; robh+dt@kernel.org; arnd@arndb.de;
> mark.rutland@arm.com; l.subrahmanya@mobiveil.co.in;
> shawnguo@kernel.org; m.karthikeyan@mobiveil.co.in; Leo Li
> <leoyang.li@nxp.com>; lorenzo.pieralisi@arm.com;
> catalin.marinas@arm.com; will.deacon@arm.com; Mingkai Hu
> <mingkai.hu@nxp.com>; M.h. Lian <minghuan.lian@nxp.com>; Xiaowei Bao
> <xiaowei.bao@nxp.com>
> Subject: Re: [PATCHv9 02/12] PCI: mobiveil: Move the host initialization into a
> routine
>
> On Wed, Nov 20, 2019 at 03:45:30AM +0000, Z.q. Hou wrote:
> > From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> >
> > Move the host initialization related operations into a new routine to
> > make it can be reused by other incoming platform's
>
> s/to make/such that/
>
> 'function' is probably a better word than 'routine'.
>

Will change in v10.

>
> > PCIe host driver, in which the Mobiveil GPEX is integrated.
> >
> > Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> > ---
> > V9:
> > - New patch splited from the #1 of V8 patches to make it easy to review.
> >
> > drivers/pci/controller/pcie-mobiveil.c | 38
> > +++++++++++++++-----------
> > 1 file changed, 22 insertions(+), 16 deletions(-)
> >
> > diff --git a/drivers/pci/controller/pcie-mobiveil.c
> > b/drivers/pci/controller/pcie-mobiveil.c
> > index 5fd26e376af2..97f682ca7c7a 100644
> > --- a/drivers/pci/controller/pcie-mobiveil.c
> > +++ b/drivers/pci/controller/pcie-mobiveil.c
> > @@ -873,27 +873,15 @@ static int mobiveil_pcie_init_irq_domain(struct
> mobiveil_pcie *pcie)
> > return 0;
> > }
> >
> > -static int mobiveil_pcie_probe(struct platform_device *pdev)
> > +int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
>
> This is no longer static - but do you need to add a header file somewhere?

The function mobiveil_pcie_probe() is still static below, the
mobiveil_pcie_host_probe() is new introduced one, it is now only used in this
.c file, so I'll change it to a static function in v10.

>
>
> > {
> > - struct mobiveil_pcie *pcie;
> > + struct root_port *rp = &pcie->rp;
> > + struct pci_host_bridge *bridge = rp->bridge;
> > + struct device *dev = &pcie->pdev->dev;
> > struct pci_bus *bus;
> > struct pci_bus *child;
> > - struct pci_host_bridge *bridge;
> > - struct device *dev = &pdev->dev;
> > - struct root_port *rp;
> > int ret;
> >
> > - /* allocate the PCIe port */
> > - bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
> > - if (!bridge)
> > - return -ENOMEM;
> > -
> > - pcie = pci_host_bridge_priv(bridge);
> > - rp = &pcie->rp;
> > - rp->bridge = bridge;
> > -
> > - pcie->pdev = pdev;
> > -
> > ret = mobiveil_pcie_parse_dt(pcie);
> > if (ret) {
> > dev_err(dev, "Parsing DT failed, ret: %x\n", ret); @@ -956,6
> > +944,24 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
> > return 0;
> > }
> >
> > +static int mobiveil_pcie_probe(struct platform_device *pdev) {
> > + struct mobiveil_pcie *pcie;
> > + struct pci_host_bridge *bridge;
> > + struct device *dev = &pdev->dev;
> > +
> > + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
>
> You've lost the comment that was above this.

Will add it back.

Thanks,
Zhiqiang

>
> Thanks,
>
> Andrew Murray
>
> > + if (!bridge)
> > + return -ENOMEM;
> > +
> > + pcie = pci_host_bridge_priv(bridge);
> > + pcie->rp.bridge = bridge;
> > +
> > + pcie->pdev = pdev;
> > +
> > + return mobiveil_pcie_host_probe(pcie); }
> > +
> > static const struct of_device_id mobiveil_pcie_of_match[] = {
> > {.compatible = "mbvl,gpex40-pcie",},
> > {},
> > --
> > 2.17.1
> >