Functions like devm_kzalloc, kmalloc_array, devm_ioremap,
usb_alloc_urb, alloc_netdev return NULL as a return value on failure.
Generally, When NULL represents failure, !x is commonly used.
This patch cleans up the tests on the results of these functions, thereby
using !x instead of x == NULL or NULL == x. This is done via following
coccinelle script:
@prob_7@
identifier x;
statement S;
@@
(
x = devm_kzalloc(...);
|
x = usb_alloc_urb(...);
|
x = kmalloc_array(...);
|
x = devm_ioremap(...);
|
x = alloc_netdev(...);
)
...
- if(NULL == x)
+ if(!x)
S
Further we have used isomorphism characteristics of coccinelle to
indicate x == NULL and NULL == x are equivalent. This is done via
following iso script.
Expression
@ is_null @ expression X; @@
X == NULL <=> NULL == X
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Functions like devm_kzalloc, kmalloc_array, devm_ioremap,
usb_alloc_urb, alloc_netdev return NULL as a return value on failure.
Generally, When NULL represents failure, !x is commonly used.
This patch cleans up the tests on the results of these functions, thereby
using !x instead of x == NULL or NULL == x. This is done via following
coccinelle script:
@prob_7@
identifier x;
statement S;
@@
(
x = devm_kzalloc(...);
|
x = usb_alloc_urb(...);
|
x = kmalloc_array(...);
|
x = devm_ioremap(...);
|
x = alloc_netdev(...);
)
...
- if(NULL == x)
+ if(!x)
S
Further we have used isomorphism characteristics of coccinelle to
indicate x == NULL and NULL == x are equivalent. This is done via
following iso script.
Expression
@ is_null @ expression X; @@
X == NULL <=> NULL == X
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Functions like devm_kzalloc, kmalloc_array, devm_ioremap,
usb_alloc_urb, alloc_netdev return NULL as a return value on failure.
Generally, When NULL represents failure, !x is commonly used.
This patch cleans up the tests on the results of these functions, thereby
using !x instead of x == NULL or NULL == x. This is done via following
coccinelle script:
@prob_7@
identifier x;
statement S;
@@
(
x = devm_kzalloc(...);
|
x = usb_alloc_urb(...);
|
x = kmalloc_array(...);
|
x = devm_ioremap(...);
|
x = alloc_netdev(...);
)
...
- if(NULL == x)
+ if(!x)
S
Further we have used isomorphism characteristics of coccinelle to
indicate x == NULL and NULL == x are equivalent. This is done via
following iso script.
Expression
@ is_null @ expression X; @@
X == NULL <=> NULL == X
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dev_* is prefered over pr_* when appropriate dev structure is present.
This patch replace pr_info and pr_warn with its dev_ counterpart.
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Code using doubly linked list is iterated generally using list_empty and
list_entry functions, but it can be better written using list_for_each_entry
macro.
This patch replaces the while loop containing list_empty and list_entry with
list_for_each_entry and list_for_each_entry_safe. list_for_each_entry is a
macro which is used to iterate over a list of given type. So while loop used to
iterate over a list can be replaced with list_for_each_entry macro. However, if
list_del is used in the loop, then list_for_each_entry_safe is a better choice.
This transformation is done by using the following coccinelle script.
@ rule1 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry;
@@
- while (list_empty(&E1) == 0)
+ list_for_each_entry (I1, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...when != list_del(...);
when != list_del_init(...);
}
@ rule2 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@
T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Code using doubly linked list is iterated generally using list_empty and
list_entry functions, but it can be better written using list_for_each_entry
macro.
This patch replaces the while loop containing list_empty and list_entry with
list_for_each_entry and list_for_each_entry_safe. list_for_each_entry is a
macro which is used to iterate over a list of given type. So while loop used to
iterate over a list can be replaced with list_for_each_entry macro. However, if
list_del is used in the loop, then list_for_each_entry_safe is a better choice.
This transformation is done by using the following coccinelle script.
@ rule1 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry;
@@
- while (list_empty(&E1) == 0)
+ list_for_each_entry (I1, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...when != list_del(...);
when != list_del_init(...);
}
@ rule2 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@
T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Code using doubly linked list is iterated generally using list_empty and
list_entry functions, but it can be better written using list_for_each_entry
macro.
This patch replaces the while loop containing list_empty and list_entry with
list_for_each_entry and list_for_each_entry_safe. list_for_each_entry is a
macro which is used to iterate over a list of given type. So while loop used to
iterate over a list can be replaced with list_for_each_entry macro. However, if
list_del is used in the loop, then list_for_each_entry_safe is a better choice.
This transformation is done by using the following coccinelle script.
@ rule1 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry;
@@
- while (list_empty(&E1) == 0)
+ list_for_each_entry (I1, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...when != list_del(...);
when != list_del_init(...);
}
@ rule2 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@
T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Checkpatch.pl suggest to avoid assignment in if statement.
This patch moves assignments out of the if statement and place
it before the if statement. This is done using following coccinelle
script.
@@
expression E1;
identifier p;
statement S;
@@
- if ((p = E1))
+ p = E1;
+ if (p)
S
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These print functions are called at the beginning
of the function and do not indicate any abnormal condition.
Signed-off-by: Vatika Harlalka <vatikaharlalka@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes macro true from if condition since variable
priv->ieee80211->LinkDetectInfo.bBusyTraffic is already of type bool.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Macro module_pci_driver is used for drivers whose init
and exit paths does only register and unregister to pci
API. So, here remove some boilerplate code by using
module_pci_driver. Also, change driver to rtsx_driver,
to avoid implicitly redefining driver_init.
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Macro module_pcmcia_driver is used for drivers whose init
and exit paths does only register and unregister to pcmcia
API. So, here remove some boilerplate code by using
module_pcmcia_driver.
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
static ints are initialized to 0 by the compiler.
Explicit initialization is not necessary.
Found by checkpatch.pl - ERROR: do not initialise statics to 0 or NULL
changes made using coccinelle script:
@@
type T;
identifier var;
@@
static T var
- =0
;
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
static ints are initialized to 0 by the compiler.
Explicit initialization is not necessary.
Found by checkpatch.pl - ERROR: do not initialise statics to 0 or NULL
changes made using coccinelle script:
@@
type T;
identifier var;
@@
static T var
- =0
;
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function setup_timer combines the initialization of a timer with the
initialization of the timer's function and data fields.
So, this patch combines the multiline code for timer initialization using the function
setup_timer. This issue is identified via coccinelle script.
@@
expression E1, E2, E3;
type T;
@@
- init_timer(&E1);
...
(
- E1.function = E2;
...
- E1.data = (T)E3;
+ setup_timer(&E1, E2, (T)E3);
|
- E1.data = (T)E3;
...
- E1.function = E2;
+ setup_timer(&E1, E2, (T)E3);
|
- E1.function = E2;
+ setup_timer(&E1, E2, 0);
)
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Functions like devm_kzalloc, kmalloc_array, devm_ioremap,
usb_alloc_urb, alloc_netdev return NULL as a return value on failure.
Generally, When NULL represents failure, !x is commonly used.
This patch cleans up the tests on the results of these functions, thereby
using !x instead of x == NULL or NULL == x. This is done via following
coccinelle script:
@prob_7@
identifier x;
statement S;
@@
(
x = devm_kzalloc(...);
|
x = usb_alloc_urb(...);
|
x = kmalloc_array(...);
|
x = devm_ioremap(...);
|
x = alloc_netdev(...);
)
...
- if(NULL == x)
+ if(!x)
S
Further we have used isomorphism characteristics of coccinelle to
indicate x == NULL and NULL == x are equivalent. This is done via
following iso script.
Expression
@ is_null @ expression X; @@
X == NULL <=> NULL == X
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add braces to improve consistency when using if statements.
Found by checkpatch.pl:
"CHECK: braces {} should be used on all arms of this statement".
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch arranges multiple-line parameters in accordance with
the parameter above them to improve coding style.
Found by checkpatch.pl
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes unnecessary blank lines between functions.
Found by checkpatch.pl:
"CHECK: Please don't use multiple blank lines".
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replaces bit shifting on 1 with the BIT(x) macro
as it's extensively used by other function in this driver.
This was done with coccinelle:
@@ int g; @@
-(1 << g)
+BIT(g)
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch simplifies pointer comparison to NULL and makes code
easier to read. Warning found by checkpatch.pl.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes unnecessary space after type casts.
Warning found by checkpatch.pl.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the conditional return of the ade77*_probe functions
based on the return values of iio_device_register as the latter
returns 0 or ret, the same as the checked values.
Warning found by coccinelle.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the checkpatch.pl warning:
WARNING: braces {} are not necessary for single
statement blocks
Signed-off-by: Taiane Coelho Ramos <exhora.tat@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove "break" statement after a "return" statement as
it does not get executed.
Found by checkpatch.pl - break is not useful after a goto
or return
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
static ints are initialized to 0 by the compiler.
Explicit initialization is not necessary.
Found by checkpatch.pl - ERROR: do not initialise statics to 0 or NULL
changes made using coccinelle script:
@@
type T;
identifier var;
@@
static T var
- =0
;
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces the use of API function setup_timer
instead of driver specific function init_timer as it is
the preferred and standard way to set and setup the timer.
To be compatible with the changes, argument types of
referenced functions are changed. Also, definition of
function _init_timer is removed as it is no longer needed
after this change.
Here, these cases are handled using Coccinelle and
semantic patch used for this is as follows:
@@ expression x, y; identifier a, b;@@
- _init_timer (&x, y, a, b);
+ setup_timer (&x, a, (unsigned long)b);
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces the use of API function mod_timer
instead of driver specific function _set_timer as it is
a more efficient and standard way to update the expire
field of an active timer. Also, definition of function
_set_timer is removed as it is no longer needed after
this change.
Here, these cases are handled using Coccinelle and
semantic patch used for this is as follows:
@@ expression x; expression y;@@
- _set_timer (&x, y);
+ mod_timer (&x, jiffies + msecs_to_jiffies (y));
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The patch converts code to use %pM specifier instead of pushing
each byte via stack.
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes comparisons to true/false values on bool variables.
Warning found by coccinelle:
"WARNING: Comparison to bool".
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove "break" statement after a "return" statement as
it does not get executed.
Found by checkpatch.pl - break is not useful after a goto
or return
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes unnecessary intermediary variables in return lines
and uses actual values.
Found by coccinelle using this semantic patch:
@@ type T; expression expr; identifier r; @@
-T r = expr;
... when != r
when strict
-return r;
+return expr;
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use msecs_to_jiffies instead of driver specific macro
MSECS. This is done using Coccinelle and semantic
patch used for this is as follows:
@@expression t;@@
- MSECS(t)
+ msecs_to_jiffies(t)
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the RTLLIB_PRINT_STR macro definition because it's
only defined in the header and it's never referenced. It also removes
PRINTABLE and MAX_STR_LEN, which were defined as helpers for the first
one.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
removed some functions which were not being used anywhere.
build tested and also verified by git grep that there is no other
reference to these functions.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the return statement at the end of a void
function as it is not necessary.
found by checkpatch.pl: WARNING: void function return statements
are not generally useful
changes made using coccinelle script:
@@
@@
... when != if (...) return;
when != if (...) { ... return;}
-return;
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Parentheses are not needed around the right hand side of an assignment.
This patch remove parenthese of such occurenses. Issue was detected and
solved using the following coccinelle script:
@rule1@
identifier x, y, z;
expression E1, E2;
@@
(
x = (y == z);
|
x = (E1 == E2);
|
x =
-(
...
-)
;
)
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes explicit true/false comparations to bool variables.
Warning found by coccinelle:
"WARNING: Comparison to bool"
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove "break" statement after a "return" statement as
it does not get executed.
Found by checkpatch.pl - break is not useful after a goto
or return
Signed-off-by: Supriya Karanth <iskaranth@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the _bss_ht struct and the associated type definition
because it is not used and it also introduces the warning:
"WARNING: do not add new typedefs".
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch detects the cases in which a variable is not modified through
the code and it is used as a return value. The variable is detected and
removed by coccinelle using the following semantic patch:
@@ type T; expression expr; identifier r; constant c; @@
-T r = expr;
... when != r
when strict
-return r;
+return expr;
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function setup_timer combines the initialization of a timer with the
initialization of the timer's function and data fields.
So, this patch combines the multiline code for timer initialization using the function
setup_timer. This issue is identified via coccinelle script.
@@
expression E1, E2, E3;
type T;
@@
- init_timer(&E1);
...
(
- E1.function = E2;
...
- E1.data = (T)E3;
+ setup_timer(&E1, E2, (T)E3);
|
- E1.data = (T)E3;
...
- E1.function = E2;
+ setup_timer(&E1, E2, (T)E3);
|
- E1.function = E2;
+ setup_timer(&E1, E2, 0);
)
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes some serious spelling errors and adds small
improvements to the phrases in order to make them easier to understand.
Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes checkpatch.pl issues with "do not use // C99 comments" errors in ieee80211_rx.c
Signed-off-by: Dilek Uzulmez <dilekuzulmez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
