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kernel/linux-rt-4.4.41/scripts/coccinelle/free/pci_free_consistent.cocci 1.22 KB
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  /// 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)