UPSTREAM: staging: ion: Fix error handling in ion_buffer_create
This patch fixes error handling case when buffer->pages allocation fails. Also, it removes unreachable code of checking ret variable although it is not updated. Signed-off-by: Rohit kumar <rohit.kr@samsung.com> Reviewed-by: Laura Abbott <labbott@redhat.com> Suggested-by: Pintu Kumar <pintu.k@samsung.com> Reviewed-by: Pintu Kumar <pintu.k@samsung.com> Reviewed-by: Gioh Kim <gioh.kim@lge.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit a56d092aa94ebcc9452ddaa47423b9a478aa6aa5) Change-Id: Ic38b8e3ef0a21de4e38e58b4bb942535fe671ae5 Bug: 34283718 Git-commit: ad592ac248aeb91448c398dcea5eaeef66790b53 Git-repo: https://android.googlesource.com/kernel/common.git Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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@ -224,10 +224,10 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
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"heap->ops->map_dma should return ERR_PTR on error"))
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table = ERR_PTR(-EINVAL);
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if (IS_ERR(table)) {
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heap->ops->free(buffer);
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kfree(buffer);
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return ERR_PTR(PTR_ERR(table));
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ret = -EINVAL;
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goto err1;
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}
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buffer->sg_table = table;
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if (ion_buffer_fault_user_mappings(buffer)) {
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int num_pages = PAGE_ALIGN(buffer->size) / PAGE_SIZE;
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@ -237,7 +237,7 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
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buffer->pages = vmalloc(sizeof(struct page *) * num_pages);
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if (!buffer->pages) {
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ret = -ENOMEM;
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goto err1;
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goto err;
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}
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for_each_sg(table->sgl, sg, table->nents, i) {
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@ -246,9 +246,6 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
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for (j = 0; j < sg->length / PAGE_SIZE; j++)
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buffer->pages[k++] = page++;
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}
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if (ret)
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goto err;
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}
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mutex_init(&buffer->lock);
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@ -275,10 +272,8 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
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err:
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heap->ops->unmap_dma(heap, buffer);
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heap->ops->free(buffer);
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err1:
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if (buffer->pages)
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vfree(buffer->pages);
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heap->ops->free(buffer);
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err2:
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kfree(buffer);
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return ERR_PTR(ret);
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