linux-kernel - [PATCH] Add USB_QUIRK_DELAY_CTRL

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Message-Id: <1546454264-11561-1-git-send-email-jackstocker.93@gmail.com>
Date:   Wed,  2 Jan 2019 18:37:44 +0000
From:   Jack Stocker <jackstocker.93@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Jack Stocker <jackstocker.93@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>,
        Harry Pan <harry.pan@...el.com>,
        Kamil Lulko <kamilx.lulko@...el.com>,
        Danilo Krummrich <danilokrummrich@...develop.de>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Add USB_QUIRK_DELAY_CTRL_MSG quirk for Corsair K70 RGB

To match the Corsair Strafe RGB, the Corsair K70 RGB also requires
USB_QUIRK_DELAY_CTRL_MSG to completely resolve boot connection issues
discussed here: https://github.com/ckb-next/ckb-next/issues/42.
Otherwise roughly 1 in 10 boots the keyboard will fail to be detected.

Signed-off-by: Jack Stocker <jackstocker.93@...il.com>
---
 drivers/usb/core/quirks.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 7909262..4a9267d 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -377,7 +377,8 @@ static const struct usb_device_id usb_quirk_list[] = {
 			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
 
 	/* Corsair K70 RGB */
-	{ USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT },
+	{ USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT |
+	  USB_QUIRK_DELAY_CTRL_MSG },
 
 	/* Corsair Strafe RGB */
 	{ USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |
-- 
2.7.4