diff options
Diffstat (limited to 'sys/dev/usb/usb_request.c')
| -rw-r--r-- | sys/dev/usb/usb_request.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/dev/usb/usb_request.c b/sys/dev/usb/usb_request.c index fc47bbf..347f946 100644 --- a/sys/dev/usb/usb_request.c +++ b/sys/dev/usb/usb_request.c @@ -67,6 +67,11 @@ #include <dev/usb/usb_bus.h> #include <sys/ctype.h> +static int usb_no_cs_fail; + +SYSCTL_INT(_hw_usb, OID_AUTO, no_cs_fail, CTLFLAG_RW, + &usb_no_cs_fail, 0, "USB clear stall failures are ignored, if set"); + #ifdef USB_DEBUG static int usb_pr_poll_delay = USB_PORT_RESET_DELAY; static int usb_pr_recovery_delay = USB_PORT_RESET_RECOVERY; @@ -238,7 +243,7 @@ usb_do_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error) switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: - +tr_transferred: /* reset error counter */ udev->clear_stall_errors = 0; @@ -297,6 +302,13 @@ tr_setup: break; DPRINTF("Clear stall failed.\n"); + + /* + * Some VMs like VirtualBox always return failure on + * clear-stall which we sometimes should just ignore. + */ + if (usb_no_cs_fail) + goto tr_transferred; if (udev->clear_stall_errors == USB_CS_RESET_LIMIT) goto tr_setup; |
