Re: [PATCH] XHCI: Activating XHCI_TRUST_TX_LENGTH quirk for Renesas uPD720201 [CORRECTED]

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On Wed, May 13, 2015 at 6:36 PM, Rodrigo Severo
<rodrigo@xxxxxxxxxxxxxxxxxxx> wrote:
> Activating XHCI_TRUST_TX_LENGTH on Renesas uPD720201 USB 3.0 hosts to get rid of
> the following warnings when using webcams on this type of host:
>
> xhci_hcd 0000:06:00.0: WARN Successful completion on short TX: needs
>         XHCI_TRUST_TX_LENGTH quirk?
>
> Signed-off-by: Rodrigo Severo <rodrigo@xxxxxxxxxxxxxxxxxxx>

When sending a second version of the patch you should mark [PATCH v2]
in the Subject.
And you can drop the 'corrected' marking.

Also you need to explain what changed in v2 compared to the previous
version below the --- line.

> ---
>  drivers/usb/host/xhci-pci.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> index b02641b..63a2d17 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -43,6 +43,7 @@
>
>  #define PCI_DEVICE_ID_ASMEDIA_ASM1042A 0x1142
>
> +#define PCI_DEVICE_ID_RENESAS_UPD720201        0x0014
>  #define PCI_DEVICE_ID_RENESAS_UPD720202        0x0015
>
>  static const char hcd_name[] = "xhci_hcd";
> @@ -173,13 +174,14 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
>                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
>         }
>
> +       if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
> +                       (pdev->device == PCI_DEVICE_ID_RENESAS_UPD720201 ||
> +                       pdev->device == PCI_DEVICE_ID_RENESAS_UPD720202))
> +               xhci->quirks |= XHCI_TRUST_TX_LENGTH;
> +
>         if (xhci->quirks & XHCI_RESET_ON_RESUME)
>                 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
>                                 "QUIRK: Resetting on resume");
> -
> -       if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
> -                       pdev->device == PCI_DEVICE_ID_RENESAS_UPD720202)
> -               xhci->quirks |= XHCI_TRUST_TX_LENGTH;
>  }

You are also moving the 'if' prior to the XHCI_RESET_ON_RESUME test.

Is this needed? If so, it should be a separate patch.

Regards,

Fabio Estevam
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