Add maintainers
********* *****
BRs,
Pei Zhang
> -----Original Message-----
> From: Zhang, Pei
> Sent: Wednesday, December 6, 2017 11:41 AM
> To: linux-kernel@vger.kernel.org; usbip-de...@lists.sourceforge.net
> Cc: Zhang, Pei <pei.zh...@intel.com>
> Subject: [PATCH] usbip: vhci-hcd: return correct port ENABLE status
>
> USB system will clear port's ENABLE feature for some USB devices when
> vdev is already assigned port address. This cause getPortStatus reports
> to system that this device is not enabled, client OS will failed to use
> this usb device.
>
> The failure devices include a SAMSUNG SSD storage, and a Logitech webcam.
>
> Signed-off-by: Pei Zhang <pei.zh...@intel.com>
> ---
> drivers/usb/usbip/vhci_hcd.c | 38 +++++++++++++++++++++++--------------
> -
> 1 file changed, 23 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index e4cb9f0..7b8cf70 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -350,24 +350,32 @@ static int vhci_hub_control(struct usb_hcd *hcd,
> u16 typeReq, u16 wValue,
> dum->re_timeout = 0;
> }
>
> - if ((dum->port_status[rhport] & (1 << USB_PORT_FEAT_RESET)) !=
> - 0 && time_after(jiffies, dum->re_timeout)) {
> - dum->port_status[rhport] |=
> - (1 << USB_PORT_FEAT_C_RESET);
> - dum->port_status[rhport] &=
> - ~(1 << USB_PORT_FEAT_RESET);
> - dum->re_timeout = 0;
> -
> - if (dum->vdev[rhport].ud.status ==
> - VDEV_ST_NOTASSIGNED) {
> - usbip_dbg_vhci_rh(
> - " enable rhport %d (status %u)\n",
> - rhport,
> - dum->vdev[rhport].ud.status);
> + if (dum->port_status[rhport] & (1 << USB_PORT_FEAT_RESET)) {
> + if (time_after(jiffies, dum->re_timeout)) {
> dum->port_status[rhport] |=
> - USB_PORT_STAT_ENABLE;
> + (1 << USB_PORT_FEAT_C_RESET);
> + dum->port_status[rhport] &=
> + ~(1 << USB_PORT_FEAT_RESET);
> + dum->re_timeout = 0;
> +
> + if (dum->vdev[rhport].ud.status ==
> + VDEV_ST_NOTASSIGNED) {
> + usbip_dbg_vhci_rh(
> + " enable rhport %d (status
> %u)\n",
> + rhport,
> + dum->vdev[rhport].ud.status);
> + dum->port_status[rhport] |=
> + USB_PORT_STAT_ENABLE;
> + }
> }
> + } else {
> + /* Port would be disabled by clearing FEAT_ENABLE bit,
> + * make it enabled here. No more thing should be done.
> */
> + if (dum->vdev[rhport].ud.status == VDEV_ST_USED)
> + dum->port_status[rhport] |=
> + USB_PORT_STAT_ENABLE;
> }
> +
> ((__le16 *) buf)[0] = cpu_to_le16(dum->port_status[rhport]);
> ((__le16 *) buf)[1] =
> cpu_to_le16(dum->port_status[rhport] >> 16);
> --
> 2.7.4
