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SubjectRe: [PATCH] usb-storage: Add support for unusual device by Sierra Wireless
Kevin Lloyd wrote:
> From: Kevin Lloyd <>
> This patch is targeted for the kernel source. It adds support
> for Sierra Wireless devices with auto-install support to the
> unusual_devices list of the usb-mass storage driver. This requires
> changes to Kconfig, Makefile, usb.c, unusual_devs.h, and the addition of
> sierra_ms.h & sierra_ms.c.

We have to do a similar thing for some zd1211rw USB-wireless devices,
which appear as a virtual CDROM drive on plugin. To convert them to a
proper wireless device, the cdrom has to be ejected, then the device
disconnects and reconnects with different ID's (and the wireless endpoints).

Originally I wrote a usb-storage subdriver to handle the auto-eject, but
this was rejected. It was decided to make usb-storage simply ignore the
devices, and have the zd1211rw driver do the eject operation. The same
may also apply in your case. See the US_FL_IGNORE_DEVICE flag, and the
DEVICE_INSTALLER handling in drivers/net/wireless/zd1211rw/zd_usb.c


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