[PATCH 1/2] staging: android: ion: Deletion of unnecessary checks before two function calls

SF Markus Elfring
2014-11-23T18:39:54Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sun, 23 Nov 2014 18:48:15 +0100

The functions ion_heap_destroy() and vfree() perform also input
parameter validation. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/staging/android/ion/ion.c | 6 ++----
drivers/staging/android/ion/ion_dummy_driver.c | 6 ++----
drivers/staging/android/ion/tegra/tegra_ion.c | 6 ++----
3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 2703609..df12cc3 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -263,8 +263,7 @@ err:
heap->ops->unmap_dma(heap, buffer);
heap->ops->free(buffer);
err1:
- if (buffer->pages)
- vfree(buffer->pages);
+ vfree(buffer->pages);
err2:
kfree(buffer);
return ERR_PTR(ret);
@@ -276,8 +275,7 @@ void ion_buffer_destroy(struct ion_buffer *buffer)
buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
buffer->heap->ops->unmap_dma(buffer->heap, buffer);
buffer->heap->ops->free(buffer);
- if (buffer->pages)
- vfree(buffer->pages);
+ vfree(buffer->pages);
kfree(buffer);
}

diff --git a/drivers/staging/android/ion/ion_dummy_driver.c b/drivers/staging/android/ion/ion_dummy_driver.c
index 3a45e79..d06bf52 100644
--- a/drivers/staging/android/ion/ion_dummy_driver.c
+++ b/drivers/staging/android/ion/ion_dummy_driver.c
@@ -112,10 +112,8 @@ static int __init ion_dummy_init(void)
}
return 0;
err:
- for (i = 0; i < dummy_ion_pdata.nr; i++) {
- if (heaps[i])
- ion_heap_destroy(heaps[i]);
- }
+ for (i = 0; i < dummy_ion_pdata.nr; ++i)
+ ion_heap_destroy(heaps[i]);
kfree(heaps);

if (carveout_ptr) {
diff --git a/drivers/staging/android/ion/tegra/tegra_ion.c b/drivers/staging/android/ion/tegra/tegra_ion.c
index 11c7cce..5b8ef0e 100644
--- a/drivers/staging/android/ion/tegra/tegra_ion.c
+++ b/drivers/staging/android/ion/tegra/tegra_ion.c
@@ -54,10 +54,8 @@ static int tegra_ion_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, idev);
return 0;
err:
- for (i = 0; i < num_heaps; i++) {
- if (heaps[i])
- ion_heap_destroy(heaps[i]);
- }
+ for (i = 0; i < num_heaps; ++i)
+ ion_heap_destroy(heaps[i]);
return err;
}

--
2.1.3