[PATCH 16/39] usb: gadget: drop null test before destroy functions

[Julia Lawall]

Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <julia.law...@lip6.fr>

---
 drivers/usb/gadget/udc/bdc/bdc_core.c |    3 +--
 drivers/usb/gadget/udc/gr_udc.c       |    3 +--
 drivers/usb/gadget/udc/mv_u3d_core.c  |    3 +--
 drivers/usb/gadget/udc/mv_udc_core.c  |    3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/gadget/udc/mv_udc_core.c 
b/drivers/usb/gadget/udc/mv_udc_core.c
index 339af51..81b6229 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -2100,8 +2100,7 @@ static int mv_udc_remove(struct platform_device *pdev)
        }
 
        /* free memory allocated in probe */
-       if (udc->dtd_pool)
-               dma_pool_destroy(udc->dtd_pool);
+       dma_pool_destroy(udc->dtd_pool);
 
        if (udc->ep_dqh)
                dma_free_coherent(&pdev->dev, udc->ep_dqh_size,
diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c
index 8aa2593..b9429bc 100644
--- a/drivers/usb/gadget/udc/gr_udc.c
+++ b/drivers/usb/gadget/udc/gr_udc.c
@@ -2117,8 +2117,7 @@ static int gr_remove(struct platform_device *pdev)
                return -EBUSY;
 
        gr_dfs_delete(dev);
-       if (dev->desc_pool)
-               dma_pool_destroy(dev->desc_pool);
+       dma_pool_destroy(dev->desc_pool);
        platform_set_drvdata(pdev, NULL);
 
        gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req);
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c 
b/drivers/usb/gadget/udc/mv_u3d_core.c
index 4c48969..dafe74e 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -1767,8 +1767,7 @@ static int mv_u3d_remove(struct platform_device *dev)
        usb_del_gadget_udc(&u3d->gadget);
 
        /* free memory allocated in probe */
-       if (u3d->trb_pool)
-               dma_pool_destroy(u3d->trb_pool);
+       dma_pool_destroy(u3d->trb_pool);
 
        if (u3d->ep_context)
                dma_free_coherent(&dev->dev, u3d->ep_context_size,
diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c 
b/drivers/usb/gadget/udc/bdc/bdc_core.c
index 5c8f4ef..ccb9c21 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -324,8 +324,7 @@ static void bdc_mem_free(struct bdc *bdc)
                                bdc->scratchpad.buff, bdc->scratchpad.sp_dma);
 
        /* Destroy the dma pools */
-       if (bdc->bd_table_pool)
-               dma_pool_destroy(bdc->bd_table_pool);
+       dma_pool_destroy(bdc->bd_table_pool);
 
        /* Free the bdc_ep array */
        kfree(bdc->bdc_ep_array);

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