On Tue, May 27, 2014 at 08:56:42AM +0400, Nikita Yushchenko wrote:
> This access causes hang on Freescale P2020DS board (that has OHCI
> provided by ULI 1533 chip).
>
> Since preserving OHCI_FMINTERVAL was originally done only for NVIDIA
> hardware and only later (in c6187597) was turned unconditional, and
> c6187597 commit message again mentions only NVIDIA, I think it should be
> safe to disable preserving OHCI_FMINTERVAL if device vendor is ULI.
Have you tested this?
> Signed-off-by: Nikita Yushchenko <nyushchenko@xxxxxxxxxxxxx>
> ---
> drivers/usb/host/pci-quirks.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
> index 00661d3..5acbd5b 100644
> --- a/drivers/usb/host/pci-quirks.c
> +++ b/drivers/usb/host/pci-quirks.c
> @@ -571,7 +571,7 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev)
> {
> void __iomem *base;
> u32 control;
> - u32 fminterval;
> + u32 uninitialized_var(fminterval);
Why is this change needed? Sounds like a compiler bug to me :)
thanks,
greg k-h
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