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usb: chipidea: udc: Use dma_pool_zalloc()

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We can make the code simpler by using dma_pool_zalloc() instead
of calling dma_pool_alloc() and then a memset().

Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
This commit is contained in:
Fabio Estevam 2016-09-08 09:34:30 -03:00 • committed by Peter Chen
commit 382c1b38d8
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/chipidea/udc.c
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@ -1677,12 +1677,10 @@ static int init_eps(struct ci_hdrc *ci)
usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0);
INIT_LIST_HEAD(&hwep->qh.queue);
hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
&hwep->qh.dma);
hwep->qh.ptr = dma_pool_zalloc(ci->qh_pool, GFP_KERNEL,
&hwep->qh.dma);
if (hwep->qh.ptr == NULL)
retval = -ENOMEM;
else
memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr));
/*
* set up shorthands for ep0 out and in endpoints,