linux-kernel - [PATCH 2/2] USB: add reset resume quirk for usb3503

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Message-id: <1404969755-30555-2-git-send-email-jy0922.shim@samsung.com>
Date:	Thu, 10 Jul 2014 14:22:35 +0900
From:	Joonyoung Shim <jy0922.shim@...sung.com>
To:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org, m.szyprowski@...sung.com,
	broonie@...aro.org, tobetter@...il.com, jy0922.shim@...sung.com
Subject: [PATCH 2/2] USB: add reset resume quirk for usb3503

The usb device will autoresume from choose_wakeup() if it is
autosuspended with the wrong wakeup setting, but below errors occur
because usb3503 misc driver will switch to standby mode when suspended.

As add USB_QUIRK_RESET_RESUME, it can stop setting wrong wakeup from
autosuspend_check().

[    7.734717] usb 1-3: reset high-speed USB device number 3 using exynos-ehci
[    7.854658] usb 1-3: device descriptor read/64, error -71
[    8.079657] usb 1-3: device descriptor read/64, error -71
[    8.294664] usb 1-3: reset high-speed USB device number 3 using exynos-ehci
[    8.414658] usb 1-3: device descriptor read/64, error -71
[    8.639657] usb 1-3: device descriptor read/64, error -71
[    8.854667] usb 1-3: reset high-speed USB device number 3 using exynos-ehci
[    9.264598] usb 1-3: device not accepting address 3, error -71
[    9.374655] usb 1-3: reset high-speed USB device number 3 using exynos-ehci
[    9.784601] usb 1-3: device not accepting address 3, error -71
[    9.784838] usb usb1-port3: device 1-3 not suspended yet

Signed-off-by: Joonyoung Shim <jy0922.shim@...sung.com>
---
 drivers/usb/core/quirks.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 739ee8e..2c9ba407 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -152,6 +152,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* INTEL VALUE SSD */
 	{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
 
+	/* USB3503 */
+	{ USB_DEVICE(0x0424, 0x3503), .driver_info = USB_QUIRK_RESET_RESUME },
+
 	{ }  /* terminating entry must be last */
 };
 
-- 
1.8.1.2

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