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Current File : //lib/modules/5.4.0-1103-aws/build/scripts/coccinelle/api/ptr_ret.cocci
// SPDX-License-Identifier: GPL-2.0-only
///
/// Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
///
// Confidence: High
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
// URL: http://coccinelle.lip6.fr/
// Options: --no-includes --include-headers
//
// Keywords: ERR_PTR, PTR_ERR, PTR_ERR_OR_ZERO
// Version min: 2.6.39
//

virtual context
virtual patch
virtual org
virtual report

@depends on patch@
expression ptr;
@@

- if (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;
+ return PTR_ERR_OR_ZERO(ptr);

@depends on patch@
expression ptr;
@@

- if (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;
+ return PTR_ERR_OR_ZERO(ptr);

@depends on patch@
expression ptr;
@@

- (IS_ERR(ptr) ? PTR_ERR(ptr) : 0)
+ PTR_ERR_OR_ZERO(ptr)

@r1 depends on !patch@
expression ptr;
position p1;
@@

* if@p1 (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;

@r2 depends on !patch@
expression ptr;
position p2;
@@

* if@p2 (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;

@r3 depends on !patch@
expression ptr;
position p3;
@@

* IS_ERR@p3(ptr) ? PTR_ERR(ptr) : 0

@script:python depends on org@
p << r1.p1;
@@

coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")


@script:python depends on org@
p << r2.p2;
@@

coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")

@script:python depends on org@
p << r3.p3;
@@

coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")

@script:python depends on report@
p << r1.p1;
@@

coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")

@script:python depends on report@
p << r2.p2;
@@

coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")

@script:python depends on report@
p << r3.p3;
@@

coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")

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