[PATCH ethtool v2 0/9] compiler warnings cleanup, part 2

[Michal Kubecek <mkubecek@suse.cz>]

Two compiler warnings still appear when compiling current source:
comparison between signed and unsigned values and missing struct member
initializations.

The former are mostly handled by declaring variables (loop iterators,
mostly) as unsigned, only few required an explicit cast. The latter are
handled by using named field initializers; in link_mode_info[] array,
helper macros are also used to make code easier to read and check.

As the final step, add "-Wextra" to default CFLAGS to catch any future
warnings as early as possible.

changes between v1 and v2:
- use unsigned int for feature_flags[] (suggested by Andrew Lunn, patch 1)
- use unsigned int for argc counters and split this change out (suggested
  by Andrew Lunn, patches 4 and 5)
- add missing argc underflow check in do_perqueue() (patch 3)

Michal Kubecek (9):
  netlink: get rid of signed/unsigned comparison warnings
  ioctl: check presence of eeprom length argument properly
  ioctl: prevent argc underflow in do_perqueue()
  ioctl: make argc counters unsigned
  ioctl: get rid of signed/unsigned comparison warnings
  get rid of signed/unsigned comparison warnings in register dump
    parsers
  settings: simplify link_mode_info[] initializers
  ioctl: convert cmdline_info arrays to named initializers
  build: add -Wextra to default CFLAGS

 Makefile.am        |   2 +-
 dsa.c              |   2 +-
 ethtool.c          | 447 ++++++++++++++++++++++++++++++++++-----------
 fec.c              |   2 +-
 ibm_emac.c         |   2 +-
 internal.h         |   2 +-
 marvell.c          |   2 +-
 natsemi.c          |   2 +-
 netlink/features.c |   6 +-
 netlink/netlink.c  |   4 +-
 netlink/netlink.h  |   2 +-
 netlink/nlsock.c   |   2 +-
 netlink/parser.c   |   2 +-
 netlink/settings.c | 242 +++++++++---------------
 rxclass.c          |   8 +-
 sfpdiag.c          |   2 +-
 tg3.c              |   4 +-
 17 files changed, 448 insertions(+), 285 deletions(-)

-- 
2.28.0