diff options
Diffstat (limited to 'modules/gralloc')
| -rw-r--r-- | modules/gralloc/framebuffer.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/modules/gralloc/framebuffer.cpp b/modules/gralloc/framebuffer.cpp index a487b5d..59c5001 100644 --- a/modules/gralloc/framebuffer.cpp +++ b/modules/gralloc/framebuffer.cpp @@ -213,13 +213,17 @@ int mapFrameBufferLocked(struct private_module_t* module) if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) return -errno; - int refreshRate = 1000000000000000LLU / + uint64_t refreshQuotient = ( uint64_t( info.upper_margin + info.lower_margin + info.yres ) * ( info.left_margin + info.right_margin + info.xres ) * info.pixclock ); + /* Beware, info.pixclock might be 0 under emulation, so avoid a + * division-by-0 here (SIGFPE on ARM) */ + int refreshRate = refreshQuotient > 0 ? (int)(1000000000000000LLU / refreshQuotient) : 0; + if (refreshRate == 0) { // bleagh, bad info from the driver refreshRate = 60*1000; // 60 Hz |