[Qemu-block] [PATCH v2 0/3] coccinelle: Clean up error checks and return value variables

[Eduardo Habkost]

v2 of the previous "error: Remove NULL checks on
error_propagate() calls" patch, now it became a series.

Changes v1 -> v2:
* The Coccinelle scripts were simplified by using "when"
  constraints to detect when a variable is not used elsewhere
  inside the function.
* Added script to remove unnecessary variables for function
  return value.
* Coccinelle scripts added to scripts/coccinelle.

Eduardo Habkost (3):
  error: Remove NULL checks on error_propagate() calls
  error: Remove unnecessary local_err variables
  [RFC] Remove unnecessary variables for function return value

 audio/audio.c                                 | 10 ++-----
 block.c                                       | 26 ++++-------------
 block/archipelago.c                           |  4 +--
 block/qcow2-cluster.c                         |  7 ++---
 block/qcow2-refcount.c                        |  7 ++---
 block/qcow2.c                                 |  4 +--
 block/quorum.c                                |  4 +--
 block/raw-posix.c                             | 24 +++------------
 block/raw_bsd.c                               |  9 +-----
 block/rbd.c                                   |  5 +---
 block/snapshot.c                              |  4 +--
 block/vmdk.c                                  |  6 ++--
 block/vvfat.c                                 |  5 +---
 blockdev.c                                    | 26 +++++------------
 bootdevice.c                                  |  4 +--
 dump.c                                        |  4 +--
 hw/acpi/aml-build.c                           | 13 ++-------
 hw/audio/intel-hda.c                          |  5 +---
 hw/display/vga.c                              |  4 +--
 hw/ide/qdev.c                                 |  4 +--
 hw/intc/s390_flic_kvm.c                       |  5 ++--
 hw/net/ne2000-isa.c                           |  4 +--
 hw/pci-host/uninorth.c                        |  5 +---
 hw/ppc/spapr_vio.c                            |  7 +----
 hw/s390x/s390-virtio-ccw.c                    |  5 +---
 hw/s390x/virtio-ccw.c                         | 42 +++++----------------------
 hw/scsi/megasas.c                             | 10 +------
 hw/scsi/scsi-generic.c                        |  5 +---
 hw/timer/mc146818rtc.c                        |  5 +---
 hw/usb/dev-storage.c                          |  4 +--
 hw/virtio/virtio-pci.c                        |  4 +--
 linux-user/signal.c                           | 15 +++-------
 page_cache.c                                  |  5 +---
 qga/commands-posix.c                          |  4 +--
 qga/commands-win32.c                          | 14 ++-------
 qobject/qlist.c                               |  5 +---
 qom/object.c                                  |  4 +--
 scripts/coccinelle/error_propagate_null.cocci | 10 +++++++
 scripts/coccinelle/remove_local_err.cocci     | 27 +++++++++++++++++
 scripts/coccinelle/return_directly.cocci      | 19 ++++++++++++
 target-i386/cpu.c                             |  4 +--
 target-i386/fpu_helper.c                      | 10 ++-----
 target-i386/kvm.c                             |  5 ++--
 target-mips/dsp_helper.c                      | 15 ++--------
 target-mips/op_helper.c                       |  4 +--
 target-s390x/helper.c                         |  6 +---
 target-sparc/cc_helper.c                      | 25 ++++------------
 target-tricore/op_helper.c                    | 13 +++------
 tests/display-vga-test.c                      |  6 +---
 tests/endianness-test.c                       |  5 +---
 tests/i440fx-test.c                           |  4 +--
 tests/intel-hda-test.c                        |  6 +---
 tests/test-filter-redirector.c                |  6 +---
 tests/virtio-blk-test.c                       |  5 +---
 tests/virtio-console-test.c                   |  6 +---
 tests/virtio-net-test.c                       |  6 +---
 tests/virtio-scsi-test.c                      |  6 +---
 tests/wdt_ib700-test.c                        |  6 +---
 ui/cursor.c                                   | 10 ++-----
 ui/qemu-pixman.c                              | 11 ++-----
 util/module.c                                 |  6 +---
 vl.c                                          |  5 +---
 62 files changed, 160 insertions(+), 384 deletions(-)
 create mode 100644 scripts/coccinelle/error_propagate_null.cocci
 create mode 100644 scripts/coccinelle/remove_local_err.cocci
 create mode 100644 scripts/coccinelle/return_directly.cocci

-- 
2.5.5