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