linux-kernel - [PATCH] usb: host: fotg210: Make use of dma_pool_zalloc() instead of dma_pool

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Date:   Mon, 18 Oct 2021 21:17:08 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] usb: host: fotg210: Make use of dma_pool_zalloc() instead of dma_pool_alloc/memset()

Replacing dma_pool_alloc/memset() with dma_pool_zalloc()
to simplify the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/usb/host/fotg210-hcd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index 296452625488..b590995a6b3e 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -1859,10 +1859,9 @@ static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210,
 	if (!qh)
 		goto done;
 	qh->hw = (struct fotg210_qh_hw *)
-		dma_pool_alloc(fotg210->qh_pool, flags, &dma);
+		dma_pool_zalloc(fotg210->qh_pool, flags, &dma);
 	if (!qh->hw)
 		goto fail;
-	memset(qh->hw, 0, sizeof(*qh->hw));
 	qh->qh_dma = dma;
 	INIT_LIST_HEAD(&qh->qtd_list);
 
-- 
2.25.1