See my comments below:
> > + /* Reset the threshold limit */
> > + if(unlikely(usb_is_intel_qrk(pdev)))
>
> Please run your patch thru scripts/checkpatch.pl -- space needed after
> *if*.
OK, I will improve it in the PATCH v2.
>
> > + usb_set_qrk_bulk_thresh(pdev);
> > +
> > return 0;
> > }
> >
> > diff --git a/drivers/usb/host/pci-quirks.c
> > b/drivers/usb/host/pci-quirks.c index 00661d3..1ea8803 100644
> > --- a/drivers/usb/host/pci-quirks.c
> > +++ b/drivers/usb/host/pci-quirks.c
> > @@ -823,6 +823,48 @@ static int handshake(void __iomem *ptr, u32 mask,
> u32 done,
> > return -ETIMEDOUT;
> > }
> >
> > +#define PCI_DEVICE_ID_INTEL_QUARK_X1000_SOC 0x0939
> > +bool usb_is_intel_qrk(struct pci_dev *pdev) {
> > + return pdev->vendor == PCI_VENDOR_ID_INTEL &&
> > + pdev->device == PCI_DEVICE_ID_INTEL_QUARK_X1000_SOC;
> > +
> > +}
> > +EXPORT_SYMBOL_GPL(usb_is_intel_qrk);
>
> Why not use DECLARE_PCI_FIXUP_FINAL() instead?
>
Alan Stern suggests me to move 'usb_is_intel_qrk' and 'usb_set_qrk_bulk_thresh'
to ehci-pci.c.
Since no other modules call these two functions, I will move them to ehci-pci.c
as static functions, so no necessary to export them out.
> > +
> > +#define EHCI_INSNREG01 0x84
> > +#define EHCI_INSNREG01_THRESH 0x007F007F /* Threshold value */
> > +void usb_set_qrk_bulk_thresh(struct pci_dev *pdev) {
> > + void __iomem *base, *op_reg_base;
> > + u8 cap_length;
> > + u32 val;
> > +
> > + if (!mmio_resource_enabled(pdev, 0))
> > + return;
> > +
> > + base = pci_ioremap_bar(pdev, 0);
> > + if (base == NULL)
> > + return;
> > +
> > + cap_length = readb(base);
> > + op_reg_base = base + cap_length;
> > +
> > + val = readl(op_reg_base + EHCI_INSNREG01);
> > + dev_printk(KERN_INFO, &pdev->dev, "INSNREG01 is 0x%08x\n", val);
> > +
> > + val = EHCI_INSNREG01_THRESH;
> > +
> > + writel(val, op_reg_base + EHCI_INSNREG01);
> > +
> > + val = readl(op_reg_base + EHCI_INSNREG01);
> > + dev_printk(KERN_INFO, &pdev->dev, "INSNREG01 is 0x%08x\n", val);
>
> I doubt these dev_printk() calls are really useful. But if the are, it's
> worth
> merging them into one call.
Actually, the dev_printk calls is not necessary, I will remove them in the
PATCH v2.
>
> WBR, Sergei
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