diff options
| -rw-r--r-- | drivers/usb/class/usblp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index e6a453590615..0e269d78810d 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -610,8 +610,10 @@ static ssize_t usblp_write(struct file *file, const char __user *buffer, size_t while (writecount < count) { if (!usblp->wcomplete) { barrier(); - if (file->f_flags & O_NONBLOCK) + if (file->f_flags & O_NONBLOCK) { + writecount += transfer_length; return writecount ? writecount : -EAGAIN; + } timeout = USBLP_WRITE_TIMEOUT; add_wait_queue(&usblp->wait, &wait); @@ -671,7 +673,8 @@ static ssize_t usblp_write(struct file *file, const char __user *buffer, size_t usblp->writeurb->transfer_buffer_length = transfer_length; - if (copy_from_user(usblp->writeurb->transfer_buffer, buffer + writecount, transfer_length)) { + if (copy_from_user(usblp->writeurb->transfer_buffer, + buffer + writecount, transfer_length)) { up(&usblp->sem); return writecount ? writecount : -EFAULT; } |