thunderbolt: stream: Fix possible short reads/writes

Since copy_page_{to|from}_iter() advances the iterator and makes
iov_iter_count() reflect the remaining bytes, subtracting nbytes from it
makes it count it twice resulting in possible short reads/writes on a
read/write spanning multiple frames.

Fix this by using iov_iter_count() directly.

Fixes: 6db21d817b43 ("thunderbolt: Add support for USB4STREAM")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

0 files changed, 0 insertions, 0 deletions