| // 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 != of_dev_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) |
