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(parent: 75e64ff) | patch
drm/i915/gvt: Make function dpy_reg_mmio_readx safe
authorChangbin Du <changbin.du@intel.com>
Tue, 13 Jun 2017 02:15:26 +0000 (10:15 +0800)
committerZhenyu Wang <zhenyuw@linux.intel.com>
Thu, 29 Jun 2017 03:15:11 +0000 (11:15 +0800)
commit5cd82b757795228516bf60a0552d1a40fa8adeb2
tree0cf1fff3514e338ea1721bb0f25ccb600da7f1a0tree | snapshot (tar.gz zip)
parent75e64ff2c2f5ce1ae5b47b2f372fe5b9dc99f5a9commit | diff
drm/i915/gvt: Make function dpy_reg_mmio_readx safe

The dpy_reg_mmio_read_x functions directly copy 4 bytes data to the
target address with considering the length. If may cause the target
memory corrupted if the requested length less than 4 bytes. Fix it
for safety even we already have some checking to avoid this happen.
And for convince, the 3 functions are merged.

Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drivers/gpu/drm/i915/gvt/handlers.c diff | blob | blame | history