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Date: Wed, 1 Jun 2011 22:34:55 +0200 From: Andre Bartke <andre.bartke@...glemail.com> To: gregkh@...e.de Cc: alan@...ux.intel.com, devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org, Andre Bartke <andre.bartke@...il.com> Subject: [PATCH] staging/gma500: Fix uninitialized variable and style issues The return variable of psb_gtt_pin() may be used uninitialized. Also fixed some coding style issues. Signed-off-by: Andre Bartke <andre.bartke@...il.com> --- drivers/staging/gma500/psb_gtt.c | 48 +++++++++++++++++++------------------- 1 files changed, 24 insertions(+), 24 deletions(-) diff --git a/drivers/staging/gma500/psb_gtt.c b/drivers/staging/gma500/psb_gtt.c index 74c5a65..bc92d1f 100644 --- a/drivers/staging/gma500/psb_gtt.c +++ b/drivers/staging/gma500/psb_gtt.c @@ -52,13 +52,13 @@ static inline uint32_t psb_gtt_mask_pte(uint32_t pfn, int type) * psb_gtt_entry - find the GART entries for a gtt_range * @dev: our DRM device * @r: our GTT range - * + * * Given a gtt_range object return the GART offset of the page table * entries for this gtt_range */ u32 *psb_gtt_entry(struct drm_device *dev, struct gtt_range *r) { - struct drm_psb_private *dev_priv = dev->dev_private; + struct drm_psb_private *dev_priv = dev->dev_private; unsigned long offset; offset = r->resource.start - dev_priv->gtt_mem->start; @@ -78,7 +78,7 @@ u32 *psb_gtt_entry(struct drm_device *dev, struct gtt_range *r) */ static int psb_gtt_insert(struct drm_device *dev, struct gtt_range *r) { - struct drm_psb_private *dev_priv = dev->dev_private; + struct drm_psb_private *dev_priv = dev->dev_private; u32 *gtt_slot, pte; int numpages = (r->resource.end + 1 - r->resource.start) >> PAGE_SHIFT; struct page **pages; @@ -104,7 +104,7 @@ static int psb_gtt_insert(struct drm_device *dev, struct gtt_range *r) } /* Make sure all the entries are set before we return */ ioread32(gtt_slot - 1); - + return 0; } @@ -127,7 +127,7 @@ static void psb_gtt_remove(struct drm_device *dev, struct gtt_range *r) WARN_ON(r->stolen); gtt_slot = psb_gtt_entry(dev, r); - pte = psb_gtt_mask_pte(page_to_pfn(dev_priv->scratch_page), 0);; + pte = psb_gtt_mask_pte(page_to_pfn(dev_priv->scratch_page), 0); for (i = 0; i < numpages; i++) iowrite32(pte, gtt_slot++); @@ -215,7 +215,7 @@ static void psb_gtt_detach_pages(struct gtt_range *gt) */ int psb_gtt_pin(struct gtt_range *gt) { - int ret; + int ret = 0; struct drm_device *dev = gt->gem.dev; struct drm_psb_private *dev_priv = dev->dev_private; @@ -264,7 +264,7 @@ void psb_gtt_unpin(struct gtt_range *gt) } mutex_unlock(&dev_priv->gtt_mutex); } - + /* * GTT resource allocator - allocate and manage GTT address space */ @@ -291,33 +291,33 @@ struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len, struct resource *r = dev_priv->gtt_mem; int ret; unsigned long start, end; - + if (backed) { - /* The start of the GTT is the stolen pages */ - start = r->start; - end = r->start + dev_priv->pg->stolen_size - 1; - } else { - /* The rest we will use for GEM backed objects */ - start = r->start + dev_priv->pg->stolen_size; - end = r->end; - } + /* The start of the GTT is the stolen pages */ + start = r->start; + end = r->start + dev_priv->pg->stolen_size - 1; + } else { + /* The rest we will use for GEM backed objects */ + start = r->start + dev_priv->pg->stolen_size; + end = r->end; + } gt = kzalloc(sizeof(struct gtt_range), GFP_KERNEL); if (gt == NULL) return NULL; - gt->resource.name = name; - gt->stolen = backed; - gt->in_gart = backed; - /* Ensure this is set for non GEM objects */ - gt->gem.dev = dev; + gt->resource.name = name; + gt->stolen = backed; + gt->in_gart = backed; + /* Ensure this is set for non GEM objects */ + gt->gem.dev = dev; kref_init(>->kref); ret = allocate_resource(dev_priv->gtt_mem, >->resource, len, start, end, PAGE_SIZE, NULL, NULL); if (ret == 0) { - gt->offset = gt->resource.start - r->start; + gt->offset = gt->resource.start - r->start; return gt; - } + } kfree(gt); return NULL; } @@ -421,7 +421,7 @@ int psb_gtt_init(struct drm_device *dev, int resume) dev_priv->pg = pg = psb_gtt_alloc(dev); if (pg == NULL) - return -ENOMEM; + return -ENOMEM; pci_read_config_word(dev->pdev, PSB_GMCH_CTRL, &dev_priv->gmch_ctrl); pci_write_config_word(dev->pdev, PSB_GMCH_CTRL, -- 1.7.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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