From: Bjørn Mork <bjorn@xxxxxxx> wdm_in_callback() will also touch this field, so we cannot change it without locking Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Bjørn Mork <bjorn@xxxxxxx> Acked-by: Oliver Neukum <oneukum@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- drivers/usb/class/cdc-wdm.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 1c50baf..1f6b5c8 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -467,7 +467,9 @@ retry: for (i = 0; i < desc->length - cntr; i++) desc->ubuf[i] = desc->ubuf[i + cntr]; + spin_lock_irq(&desc->iuspin); desc->length -= cntr; + spin_unlock_irq(&desc->iuspin); /* in case we had outstanding data */ if (!desc->length) clear_bit(WDM_READ, &desc->flags); -- 1.7.8.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
