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Merge tag 'coccinelle-for-5.20' of git://git.kernel.org/pub/scm/linux…
…/kernel/git/jlawall/linux Pull coccinelle semantic patch updates from Julia Lawall: - Update the semantic patches in the kernel that contain a URL for Coccinelle with a URL that is currently valid (from myself). - Add a semantic patch checking for unnecessary NULL tests on dev_{put, hold} functions (from Ziyang Xuan, followed bt a modification from myself). - Drop a semantic patch that replaces 0/1 by booleans, as this change was considered to be not worthwhile by some maintainers (from Steve Rostedt). - Extend an existing semantic patch with more checks for useless tests on variables addresses (from Jérémy Lefaure). * tag 'coccinelle-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: update Coccinelle URL coccinelle: free: add version constraint scripts/coccinelle/free: add NULL test before dev_{put, hold} functions coccinelle: Remove script that checks replacing 0/1 with false/true in functions returning bool coccinelle: Extend address test from ifaddr semantic patch to test expressions
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,55 @@ | ||
// SPDX-License-Identifier: GPL-2.0-only | ||
/// Since commit b37a46683739 ("netdevice: add the case if dev is NULL"), | ||
/// NULL check before dev_{put, hold} functions is not needed. | ||
/// | ||
/// Based on ifnullfree.cocci by Fabian Frederick. | ||
/// | ||
// Copyright: (C) 2022 Ziyang Xuan. | ||
// Comments: - | ||
// Options: --no-includes --include-headers | ||
// Version min: 5.15 | ||
|
||
virtual patch | ||
virtual org | ||
virtual report | ||
virtual context | ||
|
||
@r2 depends on patch@ | ||
expression E; | ||
@@ | ||
- if (E != NULL) | ||
( | ||
__dev_put(E); | ||
| | ||
dev_put(E); | ||
| | ||
dev_put_track(E, ...); | ||
| | ||
__dev_hold(E); | ||
| | ||
dev_hold(E); | ||
| | ||
dev_hold_track(E, ...); | ||
) | ||
|
||
@r depends on context || report || org @ | ||
expression E; | ||
position p; | ||
@@ | ||
|
||
* if (E != NULL) | ||
* \(__dev_put@p\|dev_put@p\|dev_put_track@p\|__dev_hold@p\|dev_hold@p\| | ||
* dev_hold_track@p\)(E, ...); | ||
|
||
@script:python depends on org@ | ||
p << r.p; | ||
@@ | ||
cocci.print_main("NULL check before dev_{put, hold} functions is not needed", p) | ||
@script:python depends on report@ | ||
p << r.p; | ||
@@ | ||
msg = "WARNING: NULL check before dev_{put, hold} functions is not needed." | ||
coccilib.report.print_report(p[0], msg) |
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