diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2009-03-26 18:25:19 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-05-02 10:56:35 -0700 |
| commit | d5e252c5a10b951763b6fcfe3dac447e23222792 (patch) | |
| tree | 9a9fd9aae1a1cfa8997adf27c6fdf76f38e49bb6 | |
| parent | 7ad5f44e85cfc8d5ecc5fb98b9d53e0c1906b9ee (diff) | |
USB: add quirk to avoid config and interface strings
upstream commit: 1662e3a7f076e51e3073faf9ce77157b529c475b
Apparently the Configuration and Interface strings aren't used as
often as the Vendor, Product, and Serial strings. In at least one
device (a Saitek Cyborg Gold 3D joystick), attempts to read the
Configuration string cause the device to stop responding to Control
requests.
This patch (as1226) adds a quirks flag, telling the kernel not to
read a device's Configuration or Interface strings, together with a
new quirk for the offending joystick.
Reported-by: Melchior FRANZ <melchior.franz@gmail.com>
Tested-by: Melchior FRANZ <melchior.franz@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | drivers/usb/core/message.c | 3 | ||||
| -rw-r--r-- | drivers/usb/core/quirks.c | 4 | ||||
| -rw-r--r-- | drivers/usb/core/sysfs.c | 4 | ||||
| -rw-r--r-- | include/linux/usb/quirks.h | 3 |
4 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index e00127c4e8e..aaf6ea50fa3 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1637,7 +1637,8 @@ free_interfaces: } kfree(new_interfaces); - if (cp->string == NULL) + if (cp->string == NULL && + !(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS)) cp->string = usb_cache_string(dev, cp->desc.iConfiguration); /* Now that all the interfaces are set up, register them diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index c070b34b669..ab93918d920 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -54,6 +54,10 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x0638, 0x0a13), .driver_info = USB_QUIRK_STRING_FETCH_255 }, + /* Saitek Cyborg Gold Joystick */ + { USB_DEVICE(0x06a3, 0x0006), .driver_info = + USB_QUIRK_CONFIG_INTF_STRINGS }, + /* M-Systems Flash Disk Pioneers */ { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME }, diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 4fb65fdc9dc..813b337fc83 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/string.h> #include <linux/usb.h> +#include <linux/usb/quirks.h> #include "usb.h" /* Active configuration fields */ @@ -847,7 +848,8 @@ int usb_create_sysfs_intf_files(struct usb_interface *intf) * and missing in others. Hence its attribute cannot be created * before the uevent is broadcast. */ - if (alt->string == NULL) + if (alt->string == NULL && + !(udev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS)) alt->string = usb_cache_string(udev, alt->desc.iInterface); if (alt->string) retval = device_create_file(&intf->dev, &dev_attr_interface); diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h index 7f6c603db65..2526f3bbd27 100644 --- a/include/linux/usb/quirks.h +++ b/include/linux/usb/quirks.h @@ -16,4 +16,7 @@ /* device can't handle Set-Interface requests */ #define USB_QUIRK_NO_SET_INTF 0x00000004 +/* device can't handle its Configuration or Interface strings */ +#define USB_QUIRK_CONFIG_INTF_STRINGS 0x00000008 + #endif /* __LINUX_USB_QUIRKS_H */ |