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Coccinelle: misc: Improve the matching of rules

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Currently because of the left associativity of the operators, pattern
IRQF_ONESHOT | flags does not match with the pattern when we have more
than one flag after the disjunction. This eventually results in giving
false positives by the script. This patch eliminates these FPs by
improving the rule.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
This commit is contained in:
Vaishali Thakkar 2016-11-23 14:16:39 +05:30 committed by Michal Marek
parent 51a5f81079
commit dca24c4544
1 changed files with 23 additions and 13 deletions
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36
scripts/coccinelle/misc/irqf_oneshot.cocci
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@ -15,16 +15,13 @@ virtual org
virtual report virtual report
@r1@ @r1@
expression dev; expression dev, irq, thread_fn;
expression irq;
expression thread_fn;
expression flags;
position p; position p;
@@ @@
( (
request_threaded_irq@p(irq, NULL, thread_fn, request_threaded_irq@p(irq, NULL, thread_fn,
( (
flags | IRQF_ONESHOT IRQF_ONESHOT | ...
| |
IRQF_ONESHOT IRQF_ONESHOT
) )
@ -32,21 +29,34 @@ IRQF_ONESHOT
| |
devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, devm_request_threaded_irq@p(dev, irq, NULL, thread_fn,
( (
flags | IRQF_ONESHOT IRQF_ONESHOT | ...
| |
IRQF_ONESHOT IRQF_ONESHOT
) )
, ...) , ...)
) )
@depends on patch@ @r2@
expression dev; expression dev, irq, thread_fn, flags, e;
expression irq;
expression thread_fn;
expression flags;
position p != r1.p; position p != r1.p;
@@ @@
( (
flags = IRQF_ONESHOT | ...
|
flags |= IRQF_ONESHOT | ...
)
... when != flags = e
(
request_threaded_irq@p(irq, NULL, thread_fn, flags, ...);
|
devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, flags, ...);
)
@depends on patch@
expression dev, irq, thread_fn, flags;
position p != {r1.p,r2.p};
@@
(
request_threaded_irq@p(irq, NULL, thread_fn, request_threaded_irq@p(irq, NULL, thread_fn,
( (
-0 -0
@ -69,13 +79,13 @@ devm_request_threaded_irq@p(dev, irq, NULL, thread_fn,
) )
@depends on context@ @depends on context@
position p != r1.p; position p != {r1.p,r2.p};
@@ @@
*request_threaded_irq@p(...) *request_threaded_irq@p(...)
@match depends on report || org@ @match depends on report || org@
expression irq; expression irq;
position p != r1.p; position p != {r1.p,r2.p};
@@ @@
request_threaded_irq@p(irq, NULL, ...) request_threaded_irq@p(irq, NULL, ...)