mirror of https://gitee.com/openkylin/linux.git
57 lines
1.3 KiB
Plaintext
57 lines
1.3 KiB
Plaintext
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// SPDX-License-Identifier: GPL-2.0
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/// Find missing put_device for every of_find_device_by_node.
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///
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// Confidence: Moderate
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// Copyright: (C) 2018-2019 Wen Yang, ZTE.
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// Comments:
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// Options: --no-includes --include-headers
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virtual report
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virtual org
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@search exists@
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local idexpression id;
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expression x,e,e1;
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position p1,p2;
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type T,T1,T2,T3;
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@@
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id = of_find_device_by_node@p1(x)
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... when != e = id
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if (id == NULL || ...) { ... return ...; }
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... when != put_device(&id->dev)
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when != platform_device_put(id)
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when != of_dev_put(id)
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when != if (id) { ... put_device(&id->dev) ... }
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when != e1 = (T)id
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when != e1 = &id->dev
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when != e1 = get_device(&id->dev)
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when != e1 = (T1)platform_get_drvdata(id)
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(
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return
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( id
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| (T2)dev_get_drvdata(&id->dev)
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| (T3)platform_get_drvdata(id)
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);
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| return@p2 ...;
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)
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@script:python depends on report@
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p1 << search.p1;
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p2 << search.p2;
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@@
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coccilib.report.print_report(p2[0], "ERROR: missing put_device; "
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+ "call of_find_device_by_node on line "
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+ p1[0].line
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+ ", but without a corresponding object release "
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+ "within this function.")
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@script:python depends on org@
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p1 << search.p1;
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p2 << search.p2;
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@@
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cocci.print_main("of_find_device_by_node", p1)
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cocci.print_secs("needed put_device", p2)
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