mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 11:21:33 +00:00
d0defb855c
In this patch, we always make the return value of function usb_stor_huawei_e220_init to be zero. Then it will not prevent usb-storage driver from attaching to the CDROM device of Huawei Datacard. Signed-off-by: fangxiaozhi <huananhu@huawei.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
/* Special Initializers for certain USB Mass Storage devices
|
|
*
|
|
* Current development and maintenance by:
|
|
* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
|
|
*
|
|
* This driver is based on the 'USB Mass Storage Class' document. This
|
|
* describes in detail the protocol used to communicate with such
|
|
* devices. Clearly, the designers had SCSI and ATAPI commands in
|
|
* mind when they created this document. The commands are all very
|
|
* similar to commands in the SCSI-II and ATAPI specifications.
|
|
*
|
|
* It is important to note that in a number of cases this class
|
|
* exhibits class-specific exemptions from the USB specification.
|
|
* Notably the usage of NAK, STALL and ACK differs from the norm, in
|
|
* that they are used to communicate wait, failed and OK on commands.
|
|
*
|
|
* Also, for certain devices, the interrupt endpoint is used to convey
|
|
* status of a command.
|
|
*
|
|
* Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
|
|
* information about this driver.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include "usb.h"
|
|
#include "initializers.h"
|
|
#include "debug.h"
|
|
#include "transport.h"
|
|
|
|
/* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
|
|
* mode */
|
|
int usb_stor_euscsi_init(struct us_data *us)
|
|
{
|
|
int result;
|
|
|
|
US_DEBUGP("Attempting to init eUSCSI bridge...\n");
|
|
us->iobuf[0] = 0x1;
|
|
result = usb_stor_control_msg(us, us->send_ctrl_pipe,
|
|
0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,
|
|
0x01, 0x0, us->iobuf, 0x1, 5000);
|
|
US_DEBUGP("-- result is %d\n", result);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function is required to activate all four slots on the UCR-61S2B
|
|
* flash reader */
|
|
int usb_stor_ucr61s2b_init(struct us_data *us)
|
|
{
|
|
struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf;
|
|
struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf;
|
|
int res;
|
|
unsigned int partial;
|
|
static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
|
|
|
|
US_DEBUGP("Sending UCR-61S2B initialization packet...\n");
|
|
|
|
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
|
|
bcb->Tag = 0;
|
|
bcb->DataTransferLength = cpu_to_le32(0);
|
|
bcb->Flags = bcb->Lun = 0;
|
|
bcb->Length = sizeof(init_string) - 1;
|
|
memset(bcb->CDB, 0, sizeof(bcb->CDB));
|
|
memcpy(bcb->CDB, init_string, sizeof(init_string) - 1);
|
|
|
|
res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
|
|
US_BULK_CB_WRAP_LEN, &partial);
|
|
if (res)
|
|
return -EIO;
|
|
|
|
US_DEBUGP("Getting status packet...\n");
|
|
res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
|
|
US_BULK_CS_WRAP_LEN, &partial);
|
|
if (res)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This places the HUAWEI E220 devices in multi-port mode */
|
|
int usb_stor_huawei_e220_init(struct us_data *us)
|
|
{
|
|
int result;
|
|
|
|
result = usb_stor_control_msg(us, us->send_ctrl_pipe,
|
|
USB_REQ_SET_FEATURE,
|
|
USB_TYPE_STANDARD | USB_RECIP_DEVICE,
|
|
0x01, 0x0, NULL, 0x0, 1000);
|
|
US_DEBUGP("Huawei mode set result is %d\n", result);
|
|
return 0;
|
|
}
|