git.ipfire.org Git - thirdparty/openembedded/openembedded-core-contrib.git/blob

   1 From 28c006c94e57ea71df11ec4fff79d7ffcfc4860f Mon Sep 17 00:00:00 2001
   2 From: Far McKon <FarMcKon@buglabs.net>
   3 Date: Tue, 3 May 2011 20:59:04 +0300
   4 Subject: [PATCH] Prevents omapfb from from crashing when pixelclock of 0 is
   5  sent to it.
   6
   7 Due to a Linux design bug it is easy to get a pixelclock set to zero
   8 when changing displays at runtime.
   9
  10 Upstream-Status: Pending
  11 ---
  12  src/omapfb-output.c | 9 +++++++--
  13  1 file changed, 7 insertions(+), 2 deletions(-)
  14
  15 diff --git a/src/omapfb-output.c b/src/omapfb-output.c
  16 index f8b4db3..4d59265 100644
  17 --- a/src/omapfb-output.c
  18 +++ b/src/omapfb-output.c
  19 @@ -125,8 +125,13 @@ OMAPFBOutputGetModes(xf86OutputPtr output)
  20         /* Only populate the native (current) mode */
  21         mode = calloc(1, sizeof(DisplayModeRec));
  22         mode->type      |= M_T_PREFERRED;
  23 -       mode->Clock = PICOS2KHZ(ofb->state_info.pixclock);
  24 -       mode->SynthClock = PICOS2KHZ(ofb->state_info.pixclock);
  25 +       if (ofb->state_info.pixclock == 0) {
  26 +               mode->Clock = 0;
  27 +               mode->SynthClock = 0;
  28 +       } else {
  29 +               mode->Clock = PICOS2KHZ(ofb->state_info.pixclock);
  30 +               mode->SynthClock = PICOS2KHZ(ofb->state_info.pixclock);
  31 +       }
  32         mode->HDisplay   = ofb->state_info.xres;
  33         mode->HSyncStart = mode->HDisplay
  34                           + ofb->state_info.right_margin;
  35 --
  36 2.1.4
  37