AcoSail/kernel_optimize_test
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usb: host: ehci: Use dma_pool_zalloc()

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Use dma_pool_zalloc() instead of dma_pool_alloc + memset

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Souptick Joarder 2018-02-14 23:18:48 +05:30 committed by Greg Kroah-Hartman
parent 7928b2cbe5
commit 22072e83eb
2 changed files with 3 additions and 6 deletions
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3
drivers/usb/host/ehci-mem.c
View File

@ -73,10 +73,9 @@ static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, gfp_t flags)
if (!qh)
goto done;
qh->hw = (struct ehci_qh_hw *)
dma_pool_alloc(ehci->qh_pool, flags, &dma);
dma_pool_zalloc(ehci->qh_pool, flags, &dma);
if (!qh->hw)
goto fail;
memset(qh->hw, 0, sizeof *qh->hw);
qh->qh_dma = dma;
// INIT_LIST_HEAD (&qh->qh_list);
INIT_LIST_HEAD (&qh->qtd_list);

6
drivers/usb/host/ehci-sched.c
View File

@ -1287,7 +1287,7 @@ itd_urb_transaction(
} else {
alloc_itd:
spin_unlock_irqrestore(&ehci->lock, flags);
itd = dma_pool_alloc(ehci->itd_pool, mem_flags,
itd = dma_pool_zalloc(ehci->itd_pool, mem_flags,
&itd_dma);
spin_lock_irqsave(&ehci->lock, flags);
if (!itd) {
@ -1297,7 +1297,6 @@ itd_urb_transaction(
}
}
memset(itd, 0, sizeof(*itd));
itd->itd_dma = itd_dma;
itd->frame = NO_FRAME;
list_add(&itd->itd_list, &sched->td_list);
@ -2081,7 +2080,7 @@ sitd_urb_transaction(
} else {
alloc_sitd:
spin_unlock_irqrestore(&ehci->lock, flags);
sitd = dma_pool_alloc(ehci->sitd_pool, mem_flags,
sitd = dma_pool_zalloc(ehci->sitd_pool, mem_flags,
&sitd_dma);
spin_lock_irqsave(&ehci->lock, flags);
if (!sitd) {
@ -2091,7 +2090,6 @@ sitd_urb_transaction(
}
}
memset(sitd, 0, sizeof(*sitd));
sitd->sitd_dma = sitd_dma;
sitd->frame = NO_FRAME;
list_add(&sitd->sitd_list, &iso_sched->td_list);