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    Subject[ 109/122] USB: echi-dbgp: increase the controller wait time to come out of halt.
    Date
    From: Greg KH <gregkh@linuxfoundation.org>

    3.5-stable review patch. If anyone has any objections, please let me know.

    ------------------

    From: Colin Ian King <colin.king@canonical.com>

    commit f96a4216e85050c0a9d41a41ecb0ae9d8e39b509 upstream.

    The default 10 microsecond delay for the controller to come out of
    halt in dbgp_ehci_startup is too short, so increase it to 1 millisecond.

    This is based on emperical testing on various USB debug ports on
    modern machines such as a Lenovo X220i and an Ivybridge development
    platform that needed to wait ~450-950 microseconds.

    Signed-off-by: Colin Ian King <colin.king@canonical.com>
    Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/early/ehci-dbgp.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/usb/early/ehci-dbgp.c
    +++ b/drivers/usb/early/ehci-dbgp.c
    @@ -450,7 +450,7 @@ static int dbgp_ehci_startup(void)
    writel(FLAG_CF, &ehci_regs->configured_flag);

    /* Wait until the controller is no longer halted */
    - loop = 10;
    + loop = 1000;
    do {
    status = readl(&ehci_regs->status);
    if (!(status & STS_HALT))



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