char array cmd is being scanned in using a %4s scanf format
specifier and so cmd must be an array of 5 chars. Increase size
to 5 chars to ensure we don't have an overflow.

Detected with static analysis by cppcheck:

"(error) Width 4 given in format string (no. 1) is larger than
destination buffer 'cmd[4]', use %3s to prevent overflowing it."
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lustre_cfg_new() returns error pointers and never NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Removed extra space before comma in memset() as a part of
checkpatch.pl fix-up.
Signed-off-by: Valerio Genovese <valerio.click@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

In combination with CONFIG_PROFILE_ANNOTATED_BRANCHES=y, the unlikely()
inside of the WARN() macro becomes too complex for gcc to see that
we don't use the output arguments of mt9m114_to_res() are used
correctly:

drivers/staging/media/atomisp/i2c/mt9m114.c: In function 'mt9m114_get_fmt':
drivers/staging/media/atomisp/i2c/mt9m114.c:817:13: error: 'height' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  int width, height;
             ^~~~~~
drivers/staging/media/atomisp/i2c/mt9m114.c: In function 'mt9m114_s_exposure_selection':
drivers/staging/media/atomisp/i2c/mt9m114.c:1179:13: error: 'height' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Without WARN_ON(), there is no problem, so by simply replacing it with
v4l2_err(), the warnings go away. The WARN() output is also not needed
here, as we'd probably catch the problem before even getting here,
and other checks for the same condition already use v4l2_err.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

UDS is another layer which actually boils down to some trivial assignments so
remove it so inline the code.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

These are not used in the driver so can go away.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This is a whole pile of code that wraps a single assignment. Remove it and
put the assignment in the caller. Once we have the kernels sorted we should
revisit these and remove all the pointless 1 item structs that go with it.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This isn't used so it can go in the bitbucket.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The base hmm MMU code doesn't support contiguous allocations (they BUG), so
remove support from them from the higher levels of the heirarchy.

We still need to unwind all these layers but it turns out that some of the init
order stuff is rather sensitive and the simple cleanup breaks everything
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Where we know the buffer size is reasonably constrained we can just use kmalloc,
and where it will be large vmalloc. This still leaves a pile in the middle.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We have one hard coded set of behaviour so unpick the indirection and function
pointers. This isn't the whole story. A lot of the callers are known sizes and
use cases so we can switch them directly to kmalloc later on.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are not using these for debugging or debug logging so remove the defines,
trim and rename the functions.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

They can be replaced by kmalloc. There are a few that do need to pick kmalloc
or vmalloc. Those we leave for the moment.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The line which is initializing mipi_info variable is too long
to read. It would be placed in next line.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The address of isp->asd[i] is already assigned to
local "asd" variable. "&isp->asd[i]" would be replaced with
just "asd".
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Enable/Disable ISP irq is switched with "enable" parameter of
enable_isp_irq(). It would be better splited to two such as
enable_isp_irq()/disable_isp_irq().

But the enable_isp_irq() is no use in atomisp_cmd.c file.
So remove the enable_isp_irq() function and add
disable_isp_irq function only.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

trivial fix to spelling mistake in dev_err error message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Define new local variable to reduce the number of reference.
The new local variable is added to save the addess of dfs
and used in atomisp_freq_scaling() function.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function uses an if statement within a for loop to guard a block of
code. If 'if' statement conditional evaluates to false, loop breaks. The
same logic can be expressed by inverting the conditional and breaking
when new conditional evaluates to true. This allows the subsequent code
to be indented one level less, aiding readability. Reduced indentation
also allows for the code to be laid out more clearly and fixes two
checkpatch warnings.

Invert if statement conditional, break from for loop if new
conditional evaluates to true. Reduce indentation in subsequent code,
fix whitespace issues. Do not change program logic.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function uses multi-way decision for control flow. Final statement of
function is spin_unlock(). Code can be simplified by adding a goto label
labelling the call to spin_unlock() and jumping to label instead of
using multi-way decision. This allows the code to be indented one
level less which adds to the readability.

Add goto label. Remove multi-way decision by jumping to label. Reduce
indentation in subsequent code. Do not change program logic.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Macro CHECK_ALINE is defined and never used.

Remove unused macro.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits WARNING: Avoid multiple line dereference.

Fix up layout of function call, move dereference to single line.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits multiple CHECK: Logical continuations should be on the
previous line.

Move logical continuations to the end of the previous line.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Kernel networking code predominately uses the identifier 'skb' for a struct
sk_buff pointer. Of 8088 instances of 'struct sk_buff *' within
net/ 6670 are named 'skb'. Following the principle of least surprise,
new networking code should use the identifier 'skb' for variables of
type 'struct sk_buff *'.

Rename identifier 'packet' to 'skb'.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Driver uses custom Michael MIC implementation. There is already an
implementation within the kernel. There is at least one other driver
already using the kernel implementation
(drivers/net/wireless/intersil/orinoco).

Add task to TODO file.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Identifier uses camel case, standard kernel style does not use camel
case.

Rename buffer 'RecvMIC' to 'recv_mic'.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits WARNING: else is not generally useful after a break
or return. Two warnings of this type are emitted for this code block,
in both cases 'else' statements are unnecessary.

Remove unnecessary 'else' statements, reduce indentation in subsequent
code.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Checkpatch emits CHECK: Alignment should match open parenthesis.

Align argument to open parenthesis.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function contains a local pointer variable defined to a memory location
within a structure. This memory location is later used by
dereferencing the struct instead of using the local pointer. The code
is cleaner if all references of the same memory location use the
local variable.

Utilize existing local pointer variable instead of dereferencing
struct.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function uses overly complex calls to memcpy(). Code may be simplified
by the use of a local variable. Code sometimes uses explicit address
of initial array element and sometimes does not. Uniformity aids
readability. If array pointers are explicit it aids readability further.

Simplify calls to memcpy(). Add local pointer variable, define it to
the correct memory location. Use newly defined variable in calls to
memcpy(). Be uniform in use of explicit address of first element of
array (&foo[0]).
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function parameter is cast to a local pointer which is then
dereferenced before it is checked to be non-NULL.

Move pointer null check to be before the pointer is dereferenced.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Multi-way decision contains two anomalies.

Firstly, a local variable is defined to be the inverse truth variable
of a struct member. This local variable is used as the conditional to
the multi-way decision. This is unnecessary, the same logic can be
expressed using the struct member directly.

Secondly, there are four branches in the multi-way decision, two of
which can never be executed. This is dead code.

Remove unnecessary local variable. Remove two branches of multi-way
decision statement that can never be executed.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function contains compound statement delineated by lone braces. This
statement represents a discreet set of functionality and thus can be
factored out into a separate function. Using a separate function
instead of a compound statement increases readability, reduces code
indentation, reduces function length, and generally looks more tidy.

Factor compound statement out to separate function.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function has duplicate code clean up sequences; identical function
call followed by return. This would be better expressed with the use
of a goto statement, as is typical in-tree.

One call site places the clean up code within the 'else' branch of an
multi-way decision. This can be more clearly expressed by inverting
the initial decision conditional and jumping directly to the cleanup
code. Subsequent code indentation can then be reduced, aiding
readability.

Fix function return code execution path. Move clean up code to end of
function with a label. Replace duplicate clean up code within function
with a jump to label. Invert conditional, jump to label if new
conditional evaluates to true, reduce indentation in subsequent code.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function contains a list of four checks, for no apparent reason two of them
are OR'ed together. Having two OR'ed together and the other two not
implies some connection between the two that are combined. It is
easier to read this code if the four unrelated checks are done as
separate statements.

Move dissimilar expressions out of logical continuation and into
separate statement.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function has return type 'int'. Function has internal linkage. Function
returns 0 on all execution paths. Function is called only once in the
driver and the return value is not checked. Removal of this return
value does not change the program logic. The 'int' return type is not
adding any information thus it is better to remove it.

Change return type of function with internal linkage from 'int' to
'void'.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

A number of functions have blocks of code guarded by an if statement.

if (foo) {
       	/* block of code */
}

This can, on occasion, more succinctly be expressed as

if (!foo)
	return

/* block of code */

This change will mean a number of whitespace issues need to be
addressed/fixed. The diff can be a little hard to read when there are
multiple lines that are very similar (for example error return
code). Splitting the indentation reduction and the whitespace fixes
into two separate patches was not found to aid reading the
diff. Therefor we fix the whitespace issues at the same time. We need
to be very sure to not make any changes to the program logic, this is
ensured by only doing what is stated - invert the conditional, fix
whitespace.

Invert if statement conditionals. Return if new conditional evaluates
to true. Reduce level of indentation in subsequent code. Fix white
space issues.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Function uses identifier 'retval' to hold the error return value. The
rest of the driver uses 'ret' for this purpose. Being uniform in the
choice of identifiers generally adds to the cleanliness of the code,
also it is arguably easier to follow the code if one name is used for
one task.

Rename identifier 'retval' to 'ret'.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Driver uses identifier 'rc' to hold the value for error return
code. The rest of the driver predominately uses 'ret' for this
purpose. It is easier to follow the code if one name is used for one
task.

Rename identifier 'rc' to 'ret'.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Length undergoes type conversion when passed (indirectly) as an
argument for parameter of type 'unsigned int'. If length is negative
this is a bug (the value after conversion is large).

Declare 'length' to be an unsigned type instead of a signed type.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>