[PATCH 4.4 007/160] parisc: Fix map_pages() to not overwrite existing pte entries

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Helge Deller commit 3c229b3f2dd8133f61bb81d3cb018be92f4bba39 upstream. Fix a long-existing small nasty bug in the map_pages() implementation which leads to overwriting already written pte

[PATCH 4.4 007/160] parisc: Fix map_pages() to not overwrite existing pte entries

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Helge Deller commit 3c229b3f2dd8133f61bb81d3cb018be92f4bba39 upstream. Fix a long-existing small nasty bug in the map_pages() implementation which leads to overwriting already written pte