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author | Somya Anand <somyaanand214@gmail.com> | 2015-03-16 19:34:09 +0530 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-16 16:28:47 +0100 |
commit | 6e3f3bb8631600ffc5788a4e9476ea841feac964 (patch) | |
tree | 7045e82b72cd9603d6a7161b498d9a83a31163f2 /drivers/staging/nvec/nvec_ps2.c | |
parent | 87e3dbc27c025b3168922c29b06775f8a8cfbce6 (diff) | |
download | linux-6e3f3bb8631600ffc5788a4e9476ea841feac964.tar.bz2 |
Staging: goldfish: use !x instead of x == NULL
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>
Diffstat (limited to 'drivers/staging/nvec/nvec_ps2.c')
0 files changed, 0 insertions, 0 deletions