scripts: Add a cocci patch for miiphy_register

[u-boot] / scripts / coccinelle / net / mdio_register.cocci

diff --git a/scripts/coccinelle/net/mdio_register.cocci b/scripts/coccinelle/net/mdio_register.cocci
new file mode 100644 (file)
index 0000000..100f102
--- /dev/null
+++ b/scripts/coccinelle/net/mdio_register.cocci
@@ -0,0 +1,142 @@
+/// Use mdio_alloc and mdio_register instead of miiphy_register
+///
+//# Stop using the oldest mii interface in drivers
+//
+// Confidence: High
+// Copyright: (C) 2016 Joe Hershberger.  GPLv2.
+// Comments:
+// Options: --include-headers --recursive-includes --local-includes -I include
+
+@ mii_reg @
+expression devname;
+identifier readfunc, writefunc;
+@@
+
++ int retval;
+- miiphy_register(devname, readfunc, writefunc);
++ struct mii_dev *mdiodev = mdio_alloc();
++ if (!mdiodev) return -ENOMEM;
++ strncpy(mdiodev->name, devname, MDIO_NAME_LEN);
++ mdiodev->read = readfunc;
++ mdiodev->write = writefunc;
++ 
++ retval = mdio_register(mdiodev);
++ if (retval < 0) return retval;
+
+@ update_read_sig @
+identifier mii_reg.readfunc;
+identifier name0, addr0, reg0, output;
+type addrT, outputT;
+@@
+
+- readfunc (
+-      const char *name0,
+-      addrT addr0,
+-      addrT reg0,
+-      outputT *output
+- )
++ readfunc (
++      struct mii_dev *bus,
++      int addr0,
++      int devad,
++      int reg0
++ )
+  {
+  ...
+  }
+
+@ update_read_impl @
+identifier mii_reg.readfunc;
+identifier update_read_sig.output;
+type update_read_sig.outputT;
+constant c;
+identifier retvar;
+expression E;
+@@
+
+  readfunc (...)
+  {
++ outputT output = 0;
+  ...
+(
+- return 0;
++ return *output;
+|
+  return c;
+|
+- return retvar;
++ if (retvar < 0)
++      return retvar;
++ return *output;
+|
+- return E;
++ int retval = E;
++ if (retval < 0)
++      return retval;
++ return *output;
+)
+  }
+
+@ update_read_impl2 @
+identifier mii_reg.readfunc;
+identifier update_read_sig.output;
+@@
+
+  readfunc (...)
+  {
+  <...
+(
+- *output
++ output
+|
+- output
++ &output
+)
+  ...>
+  }
+
+@ update_read_name @
+identifier mii_reg.readfunc;
+identifier update_read_sig.name0;
+@@
+  readfunc (...) {
+  <...
+- name0
++ bus->name
+  ...>
+  }
+
+@ update_write_sig @
+identifier mii_reg.writefunc;
+identifier name0, addr0, reg0, value0;
+type addrT, valueT;
+typedef u16;
+@@
+
+- writefunc (
+-      const char *name0,
+-      addrT addr0,
+-      addrT reg0,
+-      valueT value0
+- )
++ writefunc (
++      struct mii_dev *bus,
++      int addr0,
++      int devad,
++      int reg0,
++      u16 value0
++ )
+  {
+  ...
+  }
+
+@ update_write_name @
+identifier mii_reg.writefunc;
+identifier update_write_sig.name0;
+@@
+  writefunc (...) {
+  <...
+- name0
++ bus->name
+  ...>
+  }