USB delay init quirk for logitech Harmony 700-series devices

The Logitech Harmony 700 series needs an extra delay during
initialization.  This patch adds a USB quirk which enables such a delay
and adds the device to the quirks list.

Signed-off-by: Phil Dibowitz <phil@ipom.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index d337ef8..84c1897 100644 (file)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -20,6 +20,7 @@
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/quirks.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
 #include <linux/freezer.h>
@@ -1802,7 +1803,6 @@ int usb_new_device(struct usb_device *udev)
        pm_runtime_set_active(&udev->dev);
        pm_runtime_enable(&udev->dev);
 
-       usb_detect_quirks(udev);
        err = usb_enumerate_device(udev);       /* Read descriptors */
        if (err < 0)
                goto fail;
@@ -3114,6 +3114,10 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
                if (status < 0)
                        goto loop;
 
+               usb_detect_quirks(udev);
+               if (udev->quirks & USB_QUIRK_DELAY_INIT)
+                       msleep(1000);
+
                /* consecutive bus-powered hubs aren't reliable; they can
                 * violate the voltage drop budget.  if the new child has
                 * a "powered" LED, users should notice we didn't enable it

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index db99c08..25719da 100644 (file)
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -38,6 +38,9 @@ static const struct usb_device_id usb_quirk_list[] = {
        /* Creative SB Audigy 2 NX */
        { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
 
+       /* Logitech Harmony 700-series */
+       { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
+
        /* Philips PSC805 audio device */
        { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
 

diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
index 16b7f33..3e93de7 100644 (file)
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -26,4 +26,8 @@
    and can't handle talking to these interfaces */
 #define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020
 
+/* device needs a pause during initialization, after we read the device
+   descriptor */
+#define USB_QUIRK_DELAY_INIT           0x00000040
+
 #endif /* __LINUX_USB_QUIRKS_H */