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authorstrnape1@fel.cvut.cz <strnape1@fel.cvut.cz>2013-05-08 23:03:08 +0200
committerMichal Marek <mmarek@suse.cz>2013-07-03 15:50:38 +0200
commitf7b167113753e95ae61383e234f8d10142782ace (patch)
tree56b077d66f8969257840fd4f24724fbc7b1311c2 /scripts
parent78a95b9b4b3dcb53736a1834e8557d3e1668562a (diff)
downloadlinux-linaro-stable-f7b167113753e95ae61383e234f8d10142782ace.tar.gz
scripts: Coccinelle script for pci_free_consistent()
Created coccinelle script for reporting missing pci_free_consistent() calls. Signed-off-by: Petr Strnad <strnape1@fel.cvut.cz> Signed-off-by: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/coccinelle/free/pci_free_consistent.cocci52
1 files changed, 52 insertions, 0 deletions
diff --git a/scripts/coccinelle/free/pci_free_consistent.cocci b/scripts/coccinelle/free/pci_free_consistent.cocci
new file mode 100644
index 000000000000..43600ccb62a8
--- /dev/null
+++ b/scripts/coccinelle/free/pci_free_consistent.cocci
@@ -0,0 +1,52 @@
+/// Find missing pci_free_consistent for every pci_alloc_consistent.
+///
+// Confidence: Moderate
+// Copyright: (C) 2013 Petr Strnad. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Keywords: pci_free_consistent, pci_alloc_consistent
+// Options: --no-includes --include-headers
+
+virtual report
+virtual org
+
+@search@
+local idexpression id;
+expression x,y,z,e;
+position p1,p2;
+type T;
+@@
+
+id = pci_alloc_consistent@p1(x,y,&z)
+... when != e = id
+if (id == NULL || ...) { ... return ...; }
+... when != pci_free_consistent(x,y,id,z)
+ when != if (id) { ... pci_free_consistent(x,y,id,z) ... }
+ when != if (y) { ... pci_free_consistent(x,y,id,z) ... }
+ when != e = (T)id
+ when exists
+(
+return 0;
+|
+return 1;
+|
+return id;
+|
+return@p2 ...;
+)
+
+@script:python depends on report@
+p1 << search.p1;
+p2 << search.p2;
+@@
+
+msg = "ERROR: missing pci_free_consistent; pci_alloc_consistent on line %s and return without freeing on line %s" % (p1[0].line,p2[0].line)
+coccilib.report.print_report(p2[0],msg)
+
+@script:python depends on org@
+p1 << search.p1;
+p2 << search.p2;
+@@
+
+msg = "ERROR: missing pci_free_consistent; pci_alloc_consistent on line %s and return without freeing on line %s" % (p1[0].line,p2[0].line)
+cocci.print_main(msg,p1)
+cocci.print_secs("",p2)