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author | Danilo Krummrich <danilokrummrich@dk-develop.de> | 2018-03-06 09:38:49 +0100 |
---|---|---|
committer | Ben Hutchings <ben@decadent.org.uk> | 2018-06-16 22:22:33 +0100 |
commit | 792074e039eec26cd1b9f9652b8668cce25f5bda (patch) | |
tree | 56cbf26cf496c733fb0e421581cc857636894c14 | |
parent | 2a3415ade400cfd79f924a2a2d22f8a7e0e4c09a (diff) | |
download | linux-stable-792074e039eec26cd1b9f9652b8668cce25f5bda.tar.gz linux-stable-792074e039eec26cd1b9f9652b8668cce25f5bda.tar.bz2 linux-stable-792074e039eec26cd1b9f9652b8668cce25f5bda.zip |
usb: quirks: add control message delay for 1b1c:1b20
commit cb88a0588717ba6c756cb5972d75766b273a6817 upstream.
Corsair Strafe RGB keyboard does not respond to usb control messages
sometimes and hence generates timeouts.
Commit de3af5bf259d ("usb: quirks: add delay init quirk for Corsair
Strafe RGB keyboard") tried to fix those timeouts by adding
USB_QUIRK_DELAY_INIT.
Unfortunately, even with this quirk timeouts of usb_control_msg()
can still be seen, but with a lower frequency (approx. 1 out of 15):
[ 29.103520] usb 1-8: string descriptor 0 read error: -110
[ 34.363097] usb 1-8: can't set config #1, error -110
Adding further delays to different locations where usb control
messages are issued just moves the timeouts to other locations,
e.g.:
[ 35.400533] usbhid 1-8:1.0: can't add hid device: -110
[ 35.401014] usbhid: probe of 1-8:1.0 failed with error -110
The only way to reliably avoid those issues is having a pause after
each usb control message. In approx. 200 boot cycles no more timeouts
were seen.
Addionaly, keep USB_QUIRK_DELAY_INIT as it turned out to be necessary
to have the delay in hub_port_connect() after hub_port_init().
The overall boot time seems not to be influenced by these additional
delays, even on fast machines and lightweight distributions.
Fixes: de3af5bf259d ("usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard")
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
-rw-r--r-- | drivers/usb/core/message.c | 4 | ||||
-rw-r--r-- | drivers/usb/core/quirks.c | 3 | ||||
-rw-r--r-- | include/linux/usb/quirks.h | 3 |
3 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 0c8a7fc4dad8..66477fef2912 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -147,6 +147,10 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request, ret = usb_internal_control_msg(dev, pipe, dr, data, size, timeout); + /* Linger a bit, prior to the next control message. */ + if (dev->quirks & USB_QUIRK_DELAY_CTRL_MSG) + msleep(200); + kfree(dr); return ret; diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index d995787cae12..25391bef0642 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -226,7 +226,8 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT }, /* Corsair Strafe RGB */ - { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT }, + { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT | + USB_QUIRK_DELAY_CTRL_MSG }, /* Corsair K70 LUX */ { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT }, diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h index b54fdcb52b1c..70b965c25e3a 100644 --- a/include/linux/usb/quirks.h +++ b/include/linux/usb/quirks.h @@ -56,4 +56,7 @@ */ #define USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL BIT(11) +/* Device needs a pause after every control message. */ +#define USB_QUIRK_DELAY_CTRL_MSG BIT(13) + #endif /* __LINUX_USB_QUIRKS_H */ |