xhci: drop null test before destroy functions

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.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index bc540903542a..c48cbe731356 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1828,24 +1828,20 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
         for (i = 1; i < MAX_HC_SLOTS; ++i)
                 xhci_free_virt_device(xhci, i);
 
-        if (xhci->segment_pool)
-                dma_pool_destroy(xhci->segment_pool);
+        dma_pool_destroy(xhci->segment_pool);
         xhci->segment_pool = NULL;
         xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed segment pool");
 
-        if (xhci->device_pool)
-                dma_pool_destroy(xhci->device_pool);
+        dma_pool_destroy(xhci->device_pool);
         xhci->device_pool = NULL;
         xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed device context pool");
 
-        if (xhci->small_streams_pool)
-                dma_pool_destroy(xhci->small_streams_pool);
+        dma_pool_destroy(xhci->small_streams_pool);
         xhci->small_streams_pool = NULL;
         xhci_dbg_trace(xhci, trace_xhci_dbg_init,
                         "Freed small stream array pool");
 
-        if (xhci->medium_streams_pool)
-                dma_pool_destroy(xhci->medium_streams_pool);
+        dma_pool_destroy(xhci->medium_streams_pool);
         xhci->medium_streams_pool = NULL;
         xhci_dbg_trace(xhci, trace_xhci_dbg_init,
                         "Freed medium stream array pool");