linux-kernel - [PATCH 4.4 19/30] usb: r8a66597-hcd: decrease timeout

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Message-Id: <20170619152034.270889607@linuxfoundation.org>
Date:   Mon, 19 Jun 2017 23:20:53 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chris Brandt <chris.brandt@...esas.com>
Subject: [PATCH 4.4 19/30] usb: r8a66597-hcd: decrease timeout

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chris Brandt <chris.brandt@...esas.com>

commit dd14a3e9b92ac6f0918054f9e3477438760a4fa6 upstream.

The timeout for BULK packets was 300ms which is a long time if other
endpoints or devices are waiting for their turn. Changing it to 50ms
greatly increased the overall performance for multi-endpoint devices.

Fixes: 5d3043586db4 ("usb: r8a66597-hcd: host controller driver for R8A6659")
Signed-off-by: Chris Brandt <chris.brandt@...esas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/host/r8a66597-hcd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1269,7 +1269,7 @@ static void set_td_timer(struct r8a66597
 			time = 30;
 			break;
 		default:
-			time = 300;
+			time = 50;
 			break;
 		}