lkml.org 
[lkml]   [2017]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.14 015/164] can: mcba_usb: cancel urb on -EPROTO
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

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

    From: Martin Kelly <mkelly@xevo.com>

    commit c7f33023308f3142433b7379718af5f0c2c322a6 upstream.

    When we unplug the device, we can see both -EPIPE and -EPROTO depending
    on exact timing and what system we run on. If we continue to resubmit
    URBs, they will immediately fail, and they can cause stalls, especially
    on slower CPUs.

    Fix this by not resubmitting on -EPROTO, as we already do on -EPIPE.

    Signed-off-by: Martin Kelly <mkelly@xevo.com>
    Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/net/can/usb/mcba_usb.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/net/can/usb/mcba_usb.c
    +++ b/drivers/net/can/usb/mcba_usb.c
    @@ -593,6 +593,7 @@ static void mcba_usb_read_bulk_callback(

    case -ENOENT:
    case -EPIPE:
    + case -EPROTO:
    case -ESHUTDOWN:
    return;


    \
     
     \ /
      Last update: 2017-12-12 15:11    [W:4.122 / U:0.068 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site