/*
 * Driver for USB Mass Storage devices
 * Usual Tables File for usb-storage and libusual
 *
 * Copyright (C) 2009 Alan Stern (stern@rowland.harvard.edu)
 *
 * 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/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb_usual.h>


/*
 * The table of devices
 */
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
		    vendorName, productName, useProtocol, useTransport, \
		    initFunction, flags) \
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
  .driver_info = (flags) }

#define COMPLIANT_DEV	UNUSUAL_DEV

#define USUAL_DEV(useProto, useTrans) \
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, useProto, useTrans) }

/* Define the device is matched with Vendor ID and interface descriptors */
#define UNUSUAL_VENDOR_INTF(id_vendor, cl, sc, pr, \
			vendorName, productName, useProtocol, useTransport, \
			initFunction, flags) \
{ \
	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
				| USB_DEVICE_ID_MATCH_VENDOR, \
	.idVendor    = (id_vendor), \
	.bInterfaceClass = (cl), \
	.bInterfaceSubClass = (sc), \
	.bInterfaceProtocol = (pr), \
	.driver_info = (flags) \
}

struct usb_device_id usb_storage_usb_ids[] = {
#	include "unusual_devs.h"
	{ }		/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, usb_storage_usb_ids);

#undef UNUSUAL_DEV
#undef COMPLIANT_DEV
#undef USUAL_DEV
#undef UNUSUAL_VENDOR_INTF

/*
 * The table of devices to ignore
 */
struct ignore_entry {
	u16	vid, pid, bcdmin, bcdmax;
};

#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
		    vendorName, productName, useProtocol, useTransport, \
		    initFunction, flags) \
{					\
	.vid	= id_vendor,		\
	.pid 	= id_product,		\
	.bcdmin	= bcdDeviceMin,		\
	.bcdmax = bcdDeviceMax,		\
}

static struct ignore_entry ignore_ids[] = {
#	include "unusual_alauda.h"
#	include "unusual_cypress.h"
#	include "unusual_datafab.h"
#	include "unusual_ene_ub6250.h"
#	include "unusual_freecom.h"
#	include "unusual_isd200.h"
#	include "unusual_jumpshot.h"
#	include "unusual_karma.h"
#	include "unusual_onetouch.h"
#	include "unusual_realtek.h"
#	include "unusual_sddr09.h"
#	include "unusual_sddr55.h"
#	include "unusual_usbat.h"
	{ }		/* Terminating entry */
};

#undef UNUSUAL_DEV

/* Return an error if a device is in the ignore_ids list */
int usb_usual_ignore_device(struct usb_interface *intf)
{
	struct usb_device *udev;
	unsigned vid, pid, bcd;
	struct ignore_entry *p;

	udev = interface_to_usbdev(intf);
	vid = le16_to_cpu(udev->descriptor.idVendor);
	pid = le16_to_cpu(udev->descriptor.idProduct);
	bcd = le16_to_cpu(udev->descriptor.bcdDevice);

	for (p = ignore_ids; p->vid; ++p) {
		if (p->vid == vid && p->pid == pid &&
				p->bcdmin <= bcd && p->bcdmax >= bcd)
			return -ENXIO;
	}
	return 0;
}
e='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Rui Miguel Silva &lt;rmfrfs@gmail.com&gt;</td><td class='right'>2017-01-23 16:32:57 +0000</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-01-25 11:36:59 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/storage/Kconfig?id=b17c1bba9cec1727451b906d9a0c209774624873'>b17c1bba9cec1727451b906d9a0c209774624873</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/storage/Kconfig?id=b17c1bba9cec1727451b906d9a0c209774624873'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=b17c1bba9cec1727451b906d9a0c209774624873'>f0a0f51d405c884e23f695695858d85f6260fec0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/storage/Kconfig?id=b17c1bba9cec1727451b906d9a0c209774624873'>drivers/usb/storage/Kconfig</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/storage/Kconfig?id=9579c4dc21292f375715d7acca439dac9855b3e9'>9579c4dc21292f375715d7acca439dac9855b3e9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/storage/Kconfig?id=b17c1bba9cec1727451b906d9a0c209774624873&amp;id2=9579c4dc21292f375715d7acca439dac9855b3e9'>diff</a>)</td></tr></table>
<div class='commit-subject'>staging: greybus: timesync: validate platform state callback</div><div class='commit-msg'>When tearingdown timesync, and not in arche platform, the state platform
callback is not initialized. That will trigger the following NULL
dereferencing.
CallTrace:

 ? gb_timesync_platform_unlock_bus+0x11/0x20 [greybus]
 gb_timesync_teardown+0x85/0xc0 [greybus]
 gb_timesync_svc_remove+0xab/0x190 [greybus]
 gb_svc_del+0x29/0x110 [greybus]
 gb_hd_del+0x14/0x20 [greybus]
 ap_disconnect+0x24/0x60 [gb_es2]
 usb_unbind_interface+0x7a/0x2c0
 __device_release_driver+0x96/0x150
 device_release_driver+0x1e/0x30
 bus_remove_device+0xe7/0x130
 device_del+0x116/0x230
 usb_disable_device+0x97/0x1f0
 usb_disconnect+0x80/0x260
 hub_event+0x5ca/0x10e0
 process_one_work+0x126/0x3b0
 worker_thread+0x55/0x4c0
 ? process_one_work+0x3b0/0x3b0
 kthread+0xc4/0xe0
 ? kthread_park+0xb0/0xb0
 ret_from_fork+0x22/0x30

So, fix that by adding checks before use the callback.

Fixes: 970dc85bd95d ("greybus: timesync: Add timesync core driver")
Cc: &lt;stable@vger.kernel.org&gt; # 4.9.x
Signed-off-by: Rui Miguel Silva &lt;rmfrfs@gmail.com&gt;
Reviewed-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Reviewed-by: Johan Hovold &lt;johan@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b17c1bba9cec1727451b906d9a0c209774624873'>Diffstat</a> (limited to 'drivers/usb/storage/Kconfig')</div><table summary='diffstat' class='diffstat'>