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authorDaniel Drake <dsd@gentoo.org>2006-07-26 16:59:23 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-08-03 03:41:42 +0400
commit3c332422f78159a0f5e4bc5f0ed8bbcbf51d9462 (patch)
tree3fdb307aac396d9ae022d78b547cda48fb7d1aa2
parentb7aa94b682dc6b6dcdc01d36f8e65cef5aae81e2 (diff)
downloadlinux-3c332422f78159a0f5e4bc5f0ed8bbcbf51d9462.tar.xz
usb-storage: Add US_FL_IGNORE_DEVICE flag; ignore ZyXEL G220F
This patch adds a new unusual_devs flag for when usb-storage needs to ignore a device that it would otherwise claim. We need to ignore the ZyXEL G220F as it is a virtual CDROM drive which includes the windows driver for this USB-WLAN adapter. After the windows driver is installed on a windows system, it converts it into a WLAN adapter (by ejecting the virtual disc). The virtual CDROM is of no interest to Linux users. The zd1211rw driver will automatically perform the eject operation, we just need to ensure that usb-storage does not claim the device. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/storage/unusual_devs.h10
-rw-r--r--drivers/usb/storage/usb.c13
-rw-r--r--include/linux/usb_usual.h4
3 files changed, 23 insertions, 4 deletions
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index a5ca449f6e64..ca6c56fba282 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1106,7 +1106,15 @@ UNUSUAL_DEV( 0x0a17, 0x006, 0x0000, 0xffff,
"Optio S/S4",
US_SC_DEVICE, US_PR_DEVICE, NULL,
US_FL_FIX_INQUIRY ),
-
+
+/* This is a virtual windows driver CD, which the zd1211rw driver automatically
+ * converts into a WLAN device. */
+UNUSUAL_DEV( 0x0ace, 0x2011, 0x0101, 0x0101,
+ "ZyXEL",
+ "G-220F USB-WLAN Install",
+ US_SC_DEVICE, US_PR_DEVICE, NULL,
+ US_FL_IGNORE_DEVICE ),
+
#ifdef CONFIG_USB_STORAGE_ISD200
UNUSUAL_DEV( 0x0bf6, 0xa001, 0x0100, 0x0110,
"ATI",
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 5ee19be52f65..8d7bdcb5924d 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -483,7 +483,7 @@ static struct us_unusual_dev *find_unusual(const struct usb_device_id *id)
}
/* Get the unusual_devs entries and the string descriptors */
-static void get_device_info(struct us_data *us, const struct usb_device_id *id)
+static int get_device_info(struct us_data *us, const struct usb_device_id *id)
{
struct usb_device *dev = us->pusb_dev;
struct usb_interface_descriptor *idesc =
@@ -500,6 +500,11 @@ static void get_device_info(struct us_data *us, const struct usb_device_id *id)
unusual_dev->useTransport;
us->flags = USB_US_ORIG_FLAGS(id->driver_info);
+ if (us->flags & US_FL_IGNORE_DEVICE) {
+ printk(KERN_INFO USB_STORAGE "device ignored\n");
+ return -ENODEV;
+ }
+
/*
* This flag is only needed when we're in high-speed, so let's
* disable it if we're in full-speed
@@ -541,6 +546,8 @@ static void get_device_info(struct us_data *us, const struct usb_device_id *id)
msgs[msg],
UTS_RELEASE);
}
+
+ return 0;
}
/* Get the transport settings */
@@ -969,7 +976,9 @@ static int storage_probe(struct usb_interface *intf,
* of the match from the usb_device_id table, so we can find the
* corresponding entry in the private table.
*/
- get_device_info(us, id);
+ result = get_device_info(us, id);
+ if (result)
+ goto BadDevice;
/* Get the transport, protocol, and pipe settings */
result = get_transport(us);
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
index f38f43f20fae..e7fc5fed5b98 100644
--- a/include/linux/usb_usual.h
+++ b/include/linux/usb_usual.h
@@ -44,7 +44,9 @@
US_FLAG(NO_WP_DETECT, 0x00000200) \
/* Don't check for write-protect */ \
US_FLAG(MAX_SECTORS_64, 0x00000400) \
- /* Sets max_sectors to 64 */
+ /* Sets max_sectors to 64 */ \
+ US_FLAG(IGNORE_DEVICE, 0x00000800) \
+ /* Don't claim device */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };