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USB-EHCI: Delete unnecessary checks before the function call "dma_pool_destroy" 

The dma_pool_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Markus Elfring 2015-11-16 19:01:44 +01:00 committed by Greg Kroah-Hartman
parent 84c1eeb023
commit a7a19d7ab6
1 changed files with 5 additions and 13 deletions
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18
drivers/usb/host/ehci-mem.c
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@ -128,21 +128,13 @@ static void ehci_mem_cleanup (struct ehci_hcd *ehci)
ehci->dummy = NULL;
/* DMA consistent memory and pools */
if (ehci->qtd_pool)
dma_pool_destroy (ehci->qtd_pool);
dma_pool_destroy(ehci->qtd_pool);
ehci->qtd_pool = NULL;
if (ehci->qh_pool) {
dma_pool_destroy (ehci->qh_pool);
ehci->qh_pool = NULL;
}
if (ehci->itd_pool)
dma_pool_destroy (ehci->itd_pool);
dma_pool_destroy(ehci->qh_pool);
ehci->qh_pool = NULL;
dma_pool_destroy(ehci->itd_pool);
ehci->itd_pool = NULL;
if (ehci->sitd_pool)
dma_pool_destroy (ehci->sitd_pool);
dma_pool_destroy(ehci->sitd_pool);
ehci->sitd_pool = NULL;
if (ehci->periodic)