diff options
Diffstat (limited to 'drivers/char/agp/intel-gtt.c')
| -rw-r--r-- | drivers/char/agp/intel-gtt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c index 356f73e0d17..da8161806f3 100644 --- a/drivers/char/agp/intel-gtt.c +++ b/drivers/char/agp/intel-gtt.c @@ -814,6 +814,12 @@ static bool intel_enable_gtt(void) } } + /* On the resume path we may be adjusting the PGTBL value, so + * be paranoid and flush all chipset write buffers... + */ + if (INTEL_GTT_GEN >= 3) + writel(0, intel_private.registers+GFX_FLSH_CNTL); + reg = intel_private.registers+I810_PGETBL_CTL; writel(intel_private.PGETBL_save, reg); if (HAS_PGTBL_EN && (readl(reg) & I810_PGETBL_ENABLED) == 0) { @@ -823,6 +829,9 @@ static bool intel_enable_gtt(void) return false; } + if (INTEL_GTT_GEN >= 3) + writel(0, intel_private.registers+GFX_FLSH_CNTL); + return true; } |