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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 01/18] usb: host: ehci: Do not zero out DMA coherent memory
Date: Wed, 22 May 2019 00:33:57 -0700	[thread overview]
Message-ID: <20190522073414.9308-2-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190522073414.9308-1-andrew.smirnov@gmail.com>

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/usb/host/ehci-hcd.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 87af95d2e..54ab32830 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1069,8 +1069,6 @@ static struct int_queue *ehci_create_int_queue(struct usb_device *dev,
 	result->last = result->first + queuesize - 1;
 	result->tds = dma_alloc_coherent(sizeof(struct qTD) * queuesize,
 					 DMA_ADDRESS_BROKEN);
-	memset(result->first, 0, sizeof(struct QH) * queuesize);
-	memset(result->tds, 0, sizeof(struct qTD) * queuesize);
 
 	for (i = 0; i < queuesize; i++) {
 		struct QH *qh = result->first + i;
-- 
2.21.0


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  reply	other threads:[~2019-05-22  7:34 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22  7:33 [PATCH 00/18] EHCI improvements Andrey Smirnov
2019-05-22  7:33 ` Andrey Smirnov [this message]
2019-05-22  7:33 ` [PATCH 02/18] usb: host: ehci: Share code to enable/disable async schedule Andrey Smirnov
2019-05-22  7:33 ` [PATCH 03/18] usb: host: ehci: Use to USBSTS to wait for transfer completion Andrey Smirnov
2019-05-22  7:34 ` [PATCH 04/18] usb: host: ehci: Replace magic number with macros Andrey Smirnov
2019-05-22  7:34 ` [PATCH 05/18] usb: host: ehci: Drop unnecessary cleanup code Andrey Smirnov
2019-05-22  7:34 ` [PATCH 06/18] usb: host: ehci: Introduce ehci_prepare_qtd() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 07/18] usb: host: ehci: Simplify qTD buffer synchronization Andrey Smirnov
2019-05-22  7:34 ` [PATCH 08/18] usb: host: ehci: Simplify ehci_td_buffer() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 09/18] usb: host: ehci: Initialize qTDs explicitly Andrey Smirnov
2019-05-22  7:34 ` [PATCH 10/18] usb: host: ehci: Simplify ehci_submit_async()'s epilogue Andrey Smirnov
2019-05-22  7:34 ` [PATCH 11/18] usb: host: ehci: Drop needless assignments in ehci_submit_async() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 12/18] usb: host: ehci: Use bool to simplify ehci_submit_async() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 13/18] usb: host: ehci: Add a comment explaing IOC setting for data Andrey Smirnov
2019-05-22  7:34 ` [PATCH 14/18] usb: host: ehci: Replace explicit printf() with dev_err() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 15/18] usb: host: ehci: Drop explicit memset() in ehci_init() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 16/18] usb: host: ehci: Treat ehci->qh_list as an array Andrey Smirnov
2019-05-22  7:34 ` [PATCH 17/18] ush: host: ehci: Simplify QH initialization in ehci_submit_async() Andrey Smirnov
2019-05-22  7:34 ` [PATCH 18/18] usb: host: ehci: Allocate only NUM_QH queue heads for qh_list Andrey Smirnov
2019-05-23  7:57 ` [PATCH 00/18] EHCI improvements Sascha Hauer

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