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commit 2df7405f79ce1674d73c2786fe1a8727c905d65b upstream.
Change a bunch of arguments of wrapper functions which pass signed
integer to an unsigned integer which might cause undefined behaviors
when sign integer overflow.
Signed-off-by: Changming Liu <liu.changm@northeastern.edu>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/BL0PR06MB45482D71EA822D75A0E60A2EE5D50@BL0PR06MB4548.namprd06.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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The pointer used to log a failure of usb_register_dev() must
be set before the error is logged.
v2: fix that minor is not available before registration
Signed-off-by: oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+a0cbdbd6d169020c8959@syzkaller.appspotmail.com
Fixes: 7b5cd5fefbe02 ("USB: SisUSB2VGA: Convert printk to dev_* macros")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are two macros defined:
1) ifdef CONFIG_COMPAT => define SISUSB_NEW_CONFIG_COMPAT
2) ifdef CONFIG_USB_SISUSBVGA_CON => define INCL_SISUSB_CON
Remove the latter and make use only of the former. This removes one
layer of obfuscation.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Variable modey is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'modey' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Trivial fix to spelling mistake in text string
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.
Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.
This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Simplify return logic to avoid unnecessary variable declaration
and assignment.
These issues were detected using Coccinelle and the following
semantic patch:
@@
local idexpression ret;
expression e;
@@
-ret =
+return
e;
-return ret;
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The condition modex % 16 cannot be true when modex value is equal to 640
The condition du & 0xff cannot be true when du value is equal to 0x1400
Addresses-Coverity-Id: 101163
Addresses-Coverity-Id: 744373
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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kmalloc will print enough information in case of failure.
Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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bytes_written parameter of sisusb_copy_memory and sisusb_read_memory
is an out parameter, but its value is never used. So remove it and
pass a dummy variable down to sisusb_read_mem_bulk.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Allow for SS+
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove a call to dev_err() that was reporting an unsuccesful call to
kmalloc(), as reporting memory allocation failures is redundant. Instead
of logging the error, clean up previously allocated resources and abort
the probe with -ENOMEM. Before this change sisusb->SiS_Pr could be
dereferenced even if null after failure of memory allocation.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch remove three calls to dev_err() from sisusb_probe() as
reporting memory allocation failures is redundant:
- Remove a call to dev_err() that was reporting unsuccesful call to
kzalloc().
- Remove two calls to dev_err() that were reporting unsuccesful calls
to kmalloc().
One call to dev_err() reporting memory allocation is left unchanged as
the last patch of the series removes it.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch removes null test before calls to kfree() as kfree() can
handle null pointers safely.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The file drivers/usb/misc/sisusbvga/sisusb.c had 6 assignments inside if
tests. This patch move the assignment outside the test. The changes
also fix the remaining 2 lines that were over 80 characters.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The file drivers/usb/misc/sisusbvga/sisusb.c contained coding style
issues reported by checkpatch. This patch fixes the following
errors:
- 12 WARNING: braces {} are not necessary for single statement blocks
- 04 ERROR: return is not a function, parentheses are not required
- 03 ERROR: do not initialise statics to 0
- 1 WARNING: else is not generally useful after a break or return
- 1 WARNING: braces {} are not necessary for any arm of this statement
- 1 WARNING: Block comments use * on subsequent lines
One case in which braces are not necessary is left unchanged as other
patch of the series will fix it.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes whitespace coding style issues that can't be fixed
without adding newlines. This patch fixes the following checkpatch
warnings:
- 20 ERROR: trailing statements should be on next line
- 15 WARNING: line over 80 characters
- 03 WARNING: Missing a blank line after declarations
- 01 ERROR: space required after that ','
Five lines over 80 characters are left. The first three wont change as
the fix would require split the cast and variable name in different
lines which makes the code less readable. The last two will be fixed by
other patch in the series.
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes whitespace coding style issues that can be fixed
within a single line. This patch fixes the following checkpatch
warnings:
- 83 ERROR: space required after that ','
- 13 ERROR: switch and case should be at the same indent
- 08 WARNING: please, no spaces at the start of a line
- 03 ERROR: space required before the open parenthesis '('
- 04 WARNING: suspect code indent for conditional statements
- 01 WARNING: space prohibited between function name and open parenthesis
- 01 ERROR: spaces required around that '='
- 01 ERROR: code indent should use tabs where possible
Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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We should not be doing assignments within an if () block
so fix up the code to not do this.
change was created using Coccinelle.
CC: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Felipe Balbi <balbi@ti.com>
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The usb_put_dev() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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I have a j5 create (JUA210) USB 2 video device and adding it device id
to SIS USB video gets it to work.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Convert 1 char * array to 2 char arrays to reduce size.
Use static const to avoid array reloads on function entry.
Fix asymmetric typo.
$ size drivers/usb/misc/sisusbvga/sisusb.o*
text data bss dec hex filename
29971 4841 9180 43992 abd8 drivers/usb/misc/sisusbvga/sisusb.o.new
30083 4841 9180 44104 ac48 drivers/usb/misc/sisusbvga/sisusb.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Jóhann B. Guðmundsson <johannbg@fedoraproject.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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A failed kzalloc() is reported with a dev_err that dereferences the null
sisusb, this will cause a NULL pointer deference error.
Instead, pass dev->dev to the dev_err() rather than &sisusb->sisusb_dev->dev
Smatch analysis:
drivers/usb/misc/sisusbvga/sisusb.c:3087 sisusb_probe() error: potential null
dereference 'sisusb'. (kzalloc returns null)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Structure sisusb_info is copied to userland with "sisusb_reserved" field
uninitialized. It leads to leaking of contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Super speed is also fast enough to let sisusbvga operate.
Therefor expand the checks.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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BKL is not needed here because necessary locking is already provided
by mutex sisusb->lock.
Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Seems to me that BKL is not needed here because necessary locking is already
provided by mutex sisusb->lock.
Also change the returned value to long.
Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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If a driver can wait on an event, it can also use GFP_KERNEL.
Signed-off-by: Oliver Neukum <neukum@b1-systems.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Straightforward push into the drivers to allow
auditing individual drivers separately
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The id_table field of the struct usb_device_id is constant in <linux/usb.h>
so it is worth to make the initialization data also constant.
The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
struct I1 {
...
const struct I2 *x;
...
};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
struct I1 y = {
.x = E,
};
@c@
identifier r.I2;
identifier s.E;
@@
const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+ const
struct I2 E[] = ...;
// </smpl>
Signed-off-by: Németh Márton <nm127@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch adds the USB product ID of KAIREN's USB VGA Adaptor,
USB20SVGA-MB-PLUS, to sisusbvga work with it.
Signed-off-by: Tanaka Akira <akr@fsij.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch falls out of my work to fix usbmon so it uses virtual addresses.
It is not necessary, the "new" usbmon should work just fine with sisusbvga.
However, it seems ridiculous that anyone would use uncached memory to
transfer bulk data. Dropping the unnecessary use of usb_buffer_alloc
should be beneficial here, in case anyone ever uses the dongle on
anything beyond x86.
I had no success in raising the author of the driver by e-mail, so
the patch is not actually tested.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Albert Comerma <albert.comerma@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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sisusbvga: add USB ID for 0711:0918 Magic Control Technology Corp.
usb 1-2: new high speed USB device using ehci_hcd and address 4
usb 1-2: configuration #1 chosen from 1 choice
usb 1-2: USB2VGA dongle found at address 4
usb 1-2: Allocated 8 output buffers
usb 1-2: 8MB 1 ch/1 r SDR SDRAM, bus width 32
usb 1-2: New USB device found, idVendor=0711, idProduct=0918
usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Signed-off-by: Stefan Lippers-Hollmann <s.L-H@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is another case where the lock_kernel appears to be unneccessary and
could be removed with a bit more investigative work
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove dev_info call on disconnect. The sisusb_dev pointer may have been
set to zero by sisusb_delete at this point causing an oops.
The message does not provide any extra information over the standard USB
subsystem output so removing it does not affect functionality.
Signed-off-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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kernels
Remove dead code while at it.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Greg KH <greg@kroah.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Kill two unused variables in drivers/usb/misc/sisusbvga/sisusb.c.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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drivers/usb/misc/sisusbvga/sisusb.c: In function 'sisusb_open':
drivers/usb/misc/sisusbvga/sisusb.c:2444: warning: 'sisusb' is used uninitialized in this function
I can tell that'll oops just by looking at it.
How come this code assume a 7,000 column xterm? :(
Cc: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas <thomas@winischhofer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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drivers/usb/misc/sisusbvga/sisusb.c: In function sisusb_open
drivers/usb/misc/sisusbvga/sisusb.c:2444: warning: sisusb is used uninitialized in this function
is a genuine bug (which will cause oops). We cannot use "sisusb" in
error path for (!interface), because sisusb will itself be derived
from "interface" later.
Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch convert printk entries to dev_* macros, this provide better
debugging and better readability to the code.
Signed-off-by: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Unused code should be removed. We don't need to increase
the size of the file with dead code inside if 0 statements.
Signed-off-by: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patches clean some trailing whitespaces in sisusb2vga
driver.
Signed-off-by: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Device is Targus ACP50US which includes a Magic Control Technologies
usb vga device using the SiS315(E) or compatible.
Signed-off-by: Samson Yeung <fragmede@onepatchdown.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as908) adds central protection in usbcore for the
prototypical race between opening and unregistering a char device.
The spinlock used to protect the minor-numbers array is replaced with
an rwsem, which can remain locked across a call to a driver's open()
method. This guarantees that open() and deregister() will be mutually
exclusive.
The private locks currently used in several individual drivers for
this purpose are no longer necessary, and the patch removes them. The
following USB drivers are affected: usblcd, idmouse, auerswald,
legousbtower, sisusbvga/sisusb, ldusb, adutux, iowarrior, and
usb-skeleton.
As a side effect of this change, usb_deregister_dev() must not be
called while holding a lock that is acquired by open(). Unfortunately
a number of drivers do this, but luckily the solution is simple: call
usb_deregister_dev() before acquiring the lock.
In addition to these changes (and their consequent code
simplifications), the patch fixes a use-after-free bug in adutux and a
race between open() and release() in iowarrior.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there. Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.
To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.
Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm. I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).
Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Changming Liu
Oliver Neukum
Jiri Slaby
Colin Ian King
Greg Kroah-Hartman
Gustavo A. R. Silva
Wolfram Sang
Peter Senna Tschudin
Peter Senna Tschudin
Al Viro
Markus Elfring
Stephen Hemminger
Joe Perches
Jóhann B. Guðmundsson
Vasiliy Kulikov
Oliver Neukum
Alessio Igor Bogani
Németh Márton
Tanaka Akira
Pete Zaitcev
Albert Comerma
Stefan Lippers-Hollmann
Alan Cox
Will Newton
Fernando Luis Vazquez Cao
WANG Cong
Andrew Morton
Satyam Sharma
Felipe Balbi
samson yeung
Alan Stern
Tim Schmielau