Re: [PATCH] drivers/usb: Skip auto handoff for TI and RENESAS usb controllers
On Thu, Jan 07, 2016 at 09:23:27AM -0800, Babu Moger wrote:
> I have never seen auto handoff working on TI and RENESAS cards.
> Eventually, we force handoff. This code forces the handoff
> unconditionally. It saves 5 seconds boot time for each card.
>
> Signed-off-by: Babu Moger
> ---
> drivers/usb/host/pci-quirks.c |7 +++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
> index f940056..b7ee895 100644
> --- a/drivers/usb/host/pci-quirks.c
> +++ b/drivers/usb/host/pci-quirks.c
> @@ -1003,6 +1003,13 @@ static void quirk_usb_handoff_xhci(struct pci_dev
> *pdev)
> ext_cap_offset = xhci_find_next_cap_offset(base,
> ext_cap_offset);
> } while (1);
>
> + /* Auto handoff never worked for these devices. Force it and continue */
> + if (pdev->vendor == PCI_VENDOR_ID_TI ||
> + pdev->vendor == PCI_VENDOR_ID_RENESAS) {
> + val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED;
odd spaces here, why this format?
And are you sure that all TI and Renesas host controllers have this
issue? That's a very wide and broad test you are making here...
thanks,
greg k-h
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[PATCH] drivers/usb: Skip auto handoff for TI and RENESAS usb controllers
I have never seen auto handoff working on TI and RENESAS cards.
Eventually, we force handoff. This code forces the handoff
unconditionally. It saves 5 seconds boot time for each card.
Signed-off-by: Babu Moger
---
drivers/usb/host/pci-quirks.c |7 +++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index f940056..b7ee895 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -1003,6 +1003,13 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
ext_cap_offset = xhci_find_next_cap_offset(base,
ext_cap_offset);
} while (1);
+ /* Auto handoff never worked for these devices. Force it and continue */
+ if (pdev->vendor == PCI_VENDOR_ID_TI ||
+ pdev->vendor == PCI_VENDOR_ID_RENESAS) {
+ val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED;
+ writel(val, base + ext_cap_offset);
+ }
+
/* If the BIOS owns the HC, signal that the OS wants it, and wait */
if (val & XHCI_HC_BIOS_OWNED) {
writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);
--
1.7.1
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