lkml.org 
[lkml]   [2018]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.18 126/235] usb: gadget: udc: renesas_usb3: fix maxpacket size of ep0
    Date
    4.18-stable review patch.  If anyone has any objections, please let me know.

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

    From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

    commit dfe1a51d2a36647f74cbad478801efa7cf394376 upstream.

    This patch fixes an issue that maxpacket size of ep0 is incorrect
    for SuperSpeed. Otherwise, CDC NCM class with SuperSpeed doesn't
    work correctly on this driver because its control read data size
    is more than 64 bytes.

    Reported-by: Junki Kato <junki.kato.xk@renesas.com>
    Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
    Cc: <stable@vger.kernel.org> # v4.5+
    Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
    Tested-by: Junki Kato <junki.kato.xk@renesas.com>
    Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/gadget/udc/renesas_usb3.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    --- a/drivers/usb/gadget/udc/renesas_usb3.c
    +++ b/drivers/usb/gadget/udc/renesas_usb3.c
    @@ -787,12 +787,15 @@ static void usb3_irq_epc_int_1_speed(str
    switch (speed) {
    case USB_STA_SPEED_SS:
    usb3->gadget.speed = USB_SPEED_SUPER;
    + usb3->gadget.ep0->maxpacket = USB3_EP0_SS_MAX_PACKET_SIZE;
    break;
    case USB_STA_SPEED_HS:
    usb3->gadget.speed = USB_SPEED_HIGH;
    + usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
    break;
    case USB_STA_SPEED_FS:
    usb3->gadget.speed = USB_SPEED_FULL;
    + usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
    break;
    default:
    usb3->gadget.speed = USB_SPEED_UNKNOWN;
    @@ -2451,7 +2454,7 @@ static int renesas_usb3_init_ep(struct r
    /* for control pipe */
    usb3->gadget.ep0 = &usb3_ep->ep;
    usb_ep_set_maxpacket_limit(&usb3_ep->ep,
    - USB3_EP0_HSFS_MAX_PACKET_SIZE);
    + USB3_EP0_SS_MAX_PACKET_SIZE);
    usb3_ep->ep.caps.type_control = true;
    usb3_ep->ep.caps.dir_in = true;
    usb3_ep->ep.caps.dir_out = true;

    \
     
     \ /
      Last update: 2018-09-24 15:18    [W:3.307 / U:0.448 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site