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

[Z.q. Hou]

Hi Andrew,

Thanks a lot for your comments!

> -----Original Message-----
> From: Andrew Murray <andrew.murray@xxxxxxx>
> Sent: 2020年1月13日 18:19
> To: Z.q. Hou <zhiqiang.hou@xxxxxxx>
> Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> bhelgaas@xxxxxxxxxx; robh+dt@xxxxxxxxxx; arnd@xxxxxxxx;
> mark.rutland@xxxxxxx; l.subrahmanya@xxxxxxxxxxxxxx;
> shawnguo@xxxxxxxxxx; m.karthikeyan@xxxxxxxxxxxxxx; Leo Li
> <leoyang.li@xxxxxxx>; lorenzo.pieralisi@xxxxxxx;
> catalin.marinas@xxxxxxx; will.deacon@xxxxxxx; Mingkai Hu
> <mingkai.hu@xxxxxxx>; M.h. Lian <minghuan.lian@xxxxxxx>; Xiaowei Bao
> <xiaowei.bao@xxxxxxx>
> 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@xxxxxxx>
> >
> > 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@xxxxxxx>
> > ---
> > 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
> >