Star64_linux/drivers/net/ethernet/intel/iavf
Nathan Chancellor 3dc2154166 iavf: Use printf instead of gnu_printf for iavf_debug_d
Clang warns:

In file included from drivers/net/ethernet/intel/iavf/iavf_main.c:4:
In file included from drivers/net/ethernet/intel/iavf/iavf.h:37:
In file included from drivers/net/ethernet/intel/iavf/iavf_type.h:8:
drivers/net/ethernet/intel/iavf/iavf_osdep.h:49:18: warning: 'format' attribute argument not supported: gnu_printf [-Wignored-attributes]
        __attribute__ ((format(gnu_printf, 3, 4)));
                        ^
1 warning generated.

We can convert from gnu_printf to printf without any side effects for
two reasons:

1. All iavf_debug instances use standard printf formats, as pointed out
   by Miguel Ojeda at the below link, meaning gnu_printf is not strictly
   required.

2. However, GCC has aliased printf to gnu_printf on Linux since at least
   2010 based on git history.

   From gcc/c-family/c-format.c:

   /* Attributes such as "printf" are equivalent to those such as
      "gnu_printf" unless this is overridden by a target.  */
   static const target_ovr_attr gnu_target_overrides_format_attributes[] =
   {
     { "gnu_printf",   "printf" },
     { "gnu_scanf",    "scanf" },
     { "gnu_strftime", "strftime" },
     { "gnu_strfmon",  "strfmon" },
     { NULL,           NULL }
   };

The mentioned override only happens on Windows (mingw32). Changing from
gnu_printf to printf is a no-op for GCC and stops Clang from warning.

Link: https://github.com/ClangBuiltLinux/linux/issues/111
Suggested-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-05-30 23:15:54 -07:00
..
i40e_adminq.c
i40e_adminq.h
i40e_adminq_cmd.h i40e: Changed maximum supported FW API version to 1.8 2019-04-16 15:10:54 -07:00
iavf.h
iavf_alloc.h
iavf_client.c
iavf_client.h
iavf_common.c
iavf_devids.h
iavf_ethtool.c
iavf_main.c flow_offload: add flow_rule and flow_match structures and use them 2019-02-06 10:38:25 -08:00
iavf_osdep.h iavf: Use printf instead of gnu_printf for iavf_debug_d 2019-05-30 23:15:54 -07:00
iavf_prototype.h
iavf_register.h
iavf_status.h
iavf_trace.h
iavf_txrx.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
iavf_txrx.h
iavf_type.h
iavf_virtchnl.c
Makefile