If the HW compression is left on, the call backs from the HW will crash the kernel. The only time this code is called is when kernel mode setting is in use with kgdb and the kdb shell.
The atomic display pipe handler callback will reset everything when kgdb restores kernel to the run state. CC: David Airlie <[email protected]> Acked-by: Jesse Barnes <[email protected]> Signed-off-by: Jason Wessel <[email protected]> --- drivers/gpu/drm/i915/intel_display.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e134a81..71816db 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1165,6 +1165,10 @@ static void intel_update_fbc(struct drm_crtc *crtc, DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n"); goto out_disable; } +#ifdef CONFIG_KGDB + if (atomic_read(&kgdb_active) != -1) + goto out_disable; +#endif /* CONFIG_KGDB */ if (dev_priv->display.fbc_enabled(crtc)) { /* We can re-enable it in this case, but need to update pitch */ -- 1.6.4.rc1 ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
