Home Home > GIT Browse
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPhil Dibowitz <phil@ipom.com>2010-07-22 00:05:01 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-13 13:27:25 -0700
commit631b2d37894bb2a891d8897e1861362a23dde4d9 (patch)
treef80555e7d2ed4eb5ae28ac2353cf6571aa6f8a06
parentdf9f1d0df4208a41410922114eb73cfeba254803 (diff)
USB delay init quirk for logitech Harmony 700-series devices
commit 93362a875fc69881ae69299efaf19a55a1f57db0 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/core/hub.c6
-rw-r--r--drivers/usb/core/quirks.c3
-rw-r--r--include/linux/usb/quirks.h4
3 files changed, 12 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3e28f9216fad..91ddeba1339e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -23,6 +23,7 @@
#include <linux/mutex.h>
#include <linux/freezer.h>
#include <linux/pm_runtime.h>
+#include <linux/usb/quirks.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
@@ -1790,7 +1791,6 @@ 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;
@@ -3100,6 +3100,10 @@ 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 df5dda7cfcc7..efa348212f4d 100644
--- 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 0a555dd131fc..8052e000b4ef 100644
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -22,4 +22,8 @@
/*device will morph if reset, don't use reset for handling errors */
#define USB_QUIRK_RESET_MORPHS 0x00000010
+/* device needs a pause during initialization, after we read the device
+ descriptor */
+#define USB_QUIRK_DELAY_INIT 0x00000040
+
#endif /* __LINUX_USB_QUIRKS_H */