diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2009-02-25 04:35:11 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-25 15:09:50 +0300 |
| commit | 6644107d57a8fa82b47e4c55da4d9d91a612f29c (patch) | |
| tree | d9958e77fbb2ef2e11b2e17259cb6a69406eb2e7 /drivers/gpu | |
| parent | ddf9499b3d1e655f212f22b0a703506fcac90b25 (diff) | |
| download | linux-6644107d57a8fa82b47e4c55da4d9d91a612f29c.tar.xz | |
gpu/drm, x86, PAT: Handle io_mapping_create_wc() errors in a clean way
io_mapping_create_wc can return NULL on error and io_mapping_free() should be
called on one of the error-cleanup path.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 2d797ffe8137..6949c2d58f1d 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1090,6 +1090,11 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) dev_priv->mm.gtt_mapping = io_mapping_create_wc(dev->agp->base, dev->agp->agp_info.aper_size * 1024*1024); + if (dev_priv->mm.gtt_mapping == NULL) { + ret = -EIO; + goto out_rmmap; + } + /* Set up a WC MTRR for non-PAT systems. This is more common than * one would think, because the kernel disables PAT on first * generation Core chips because WC PAT gets overridden by a UC @@ -1122,7 +1127,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (!I915_NEED_GFX_HWS(dev)) { ret = i915_init_phys_hws(dev); if (ret != 0) - goto out_rmmap; + goto out_iomapfree; } /* On the 945G/GM, the chipset reports the MSI capability on the @@ -1161,6 +1166,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) return 0; +out_iomapfree: + io_mapping_free(dev_priv->mm.gtt_mapping); out_rmmap: iounmap(dev_priv->regs); free_priv: |