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    Subject[PATCH 5.11 283/329] usb: xhci: Increase timeout for HC halt
    Date
    From: Maximilian Luz <luzmaximilian@gmail.com>

    commit ca09b1bea63ab83f4cca3a2ae8bc4f597ec28851 upstream.

    On some devices (specifically the SC8180x based Surface Pro X with
    QCOM04A6) HC halt / xhci_halt() times out during boot. Manually binding
    the xhci-hcd driver at some point later does not exhibit this behavior.
    To work around this, double XHCI_MAX_HALT_USEC, which also resolves this
    issue.

    Cc: <stable@vger.kernel.org>
    Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
    Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
    Link: https://lore.kernel.org/r/20210512080816.866037-5-mathias.nyman@linux.intel.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/usb/host/xhci-ext-caps.h | 5 +++--
    1 file changed, 3 insertions(+), 2 deletions(-)

    --- a/drivers/usb/host/xhci-ext-caps.h
    +++ b/drivers/usb/host/xhci-ext-caps.h
    @@ -7,8 +7,9 @@
    * Author: Sarah Sharp
    * Some code borrowed from the Linux EHCI driver.
    */
    -/* Up to 16 ms to halt an HC */
    -#define XHCI_MAX_HALT_USEC (16*1000)
    +
    +/* HC should halt within 16 ms, but use 32 ms as some hosts take longer */
    +#define XHCI_MAX_HALT_USEC (32 * 1000)
    /* HC not running - set to 1 when run/stop bit is cleared. */
    #define XHCI_STS_HALT (1<<0)


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