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aa519be34f
While accessing a unusual usb storage (ums-alauda, ums-cypress, ...), the module reference count is not incremented. Because these drivers allocate scsi hosts with usb_stor_host_template defined in usb-storage module. So these drivers always can be unloaded. This fixes it by preparing scsi host template which is initialized at module_init() for each ums-* driver. In order to minimize the difference in ums-* drivers, introduce module_usb_stor_driver() helper macro which is same as module_usb_driver() except that it also initializes scsi host template. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Vinayak Holikatti <vinholikatti@gmail.com> Cc: Dolev Raviv <draviv@codeaurora.org> Cc: Sujit Reddy Thumma <sthumma@codeaurora.org> Cc: Subhash Jadavani <subhashj@codeaurora.org> Cc: Christoph Hellwig <hch@lst.de> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Hannes Reinecke <hare@suse.de> Cc: linux-usb@vger.kernel.org Cc: usb-storage@lists.one-eyed-alien.net Cc: linux-scsi@vger.kernel.org Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
2 KiB
C
49 lines
2 KiB
C
/* Driver for USB Mass Storage compliant devices
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* SCSI Connecting Glue Header File
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*
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* Current development and maintenance by:
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* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
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*
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* This driver is based on the 'USB Mass Storage Class' document. This
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* describes in detail the protocol used to communicate with such
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* devices. Clearly, the designers had SCSI and ATAPI commands in
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* mind when they created this document. The commands are all very
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* similar to commands in the SCSI-II and ATAPI specifications.
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*
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* It is important to note that in a number of cases this class
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* exhibits class-specific exemptions from the USB specification.
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* Notably the usage of NAK, STALL and ACK differs from the norm, in
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* that they are used to communicate wait, failed and OK on commands.
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*
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* Also, for certain devices, the interrupt endpoint is used to convey
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* status of a command.
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*
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* Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
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* information about this driver.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _SCSIGLUE_H_
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#define _SCSIGLUE_H_
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extern void usb_stor_report_device_reset(struct us_data *us);
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extern void usb_stor_report_bus_reset(struct us_data *us);
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extern void usb_stor_host_template_init(struct scsi_host_template *sht,
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const char *name, struct module *owner);
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extern unsigned char usb_stor_sense_invalidCDB[18];
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#endif
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