The i915 driver has quite a few module unload bugs, the known ones at least have fixes that are targeting 2.6.37. However, in order to maintain a stable kernel, we should prevent this known random memory corruption following driver unload. This should have very low impact on normal users who are unlikely to need to unload the i915 driver.
Suggested-by: Thomas Gleixner <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: [email protected] Signed-off-by: Chris Wilson <[email protected]> --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index c74e4e8..2dd2c93 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2231,6 +2231,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) dev_priv->mchdev_lock = &mchdev_lock; spin_unlock(&mchdev_lock); + /* XXX Prevent module unload due to memory corruption bugs. */ + __module_get(THIS_MODULE); + return 0; out_workqueue_free: -- 1.7.1 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
