prima: Fix buffer overwrite problem in GETSCANHOMETIME

If (len + 1) is greater than priv_data.total_len then copy_to_user
results in writing more data than the buffer can hold.
Fix this by writing mininum of (len + 1) and priv_data.total_len.

Change-Id: Ib8a0311d0e375310985f30fa6946685e1709ed0a
CRs-Fixed: 865555
1 file changed
tree: c5a4364fc61744b8bb1a0251cbcc1730045e15f5
  1. CORE/
  2. firmware_bin/
  3. riva/
  4. Android.mk
  5. Kbuild
  6. Kconfig
  7. Makefile