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Subject[PATCH 2/2] usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks
Date
There's a new quirk, USB_QUIRK_DELAY_CTRL_MSG. Add it to usbcore quirks
for completeness.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
Documentation/admin-guide/kernel-parameters.txt | 4 +++-
drivers/usb/core/quirks.c | 3 +++
2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 61ab660f7fdc..a0b4377cb8da 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4454,7 +4454,9 @@
calculation);
m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs
to be disconnected before suspend to
- prevent spurious wakeup)
+ prevent spurious wakeup);
+ n = USB_QUIRK_DELAY_CTRL_MSG (Device needs a
+ pause after every control message);
Example: quirks=0781:5580:bk,0a5c:5834:gij

usbhid.mousepoll=
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 29e5f32b38df..920f48a49a87 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -124,6 +124,9 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp)
case 'm':
flags |= USB_QUIRK_DISCONNECT_SUSPEND;
break;
+ case 'n':
+ flags |= USB_QUIRK_DELAY_CTRL_MSG;
+ break;
/* Ignore unrecognized flag characters */
}
}
--
2.15.1
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