Re: [dpdk-dev] [PATCH v2 2/7] drivers/net/e1000: Fix missing brackets

[Panu Matilainen <pmatilai@redhat.com>]

On 03/24/2016 02:35 AM, Lu, Wenzhuo wrote:
> Hi Thomas, Aaron,
>>> Wenzhuo, do you agree to fix the base driver here?
> Honestly I find the logic has some problem and maybe more changes needed. I'm talking with our kernel driver contactors to make sure they have no concern about  my idea.
> And Aaron, do we really need to fix this code? For I find this function is not called. So it has no real impact to us. Could we just wait until kernel driver fixes it and leverage the new version? Thanks.

It breaks the build with gcc >= 6.0 due to -Werror so yes we need to fix 
it, one way or the other.

As spelled out in an earlier mail 
(http://dpdk.org/ml/archives/dev/2016-March/034290.html), for somebody 
building with gcc >= 6.0 the options basically are:
1) disable the driver entirely
2) build with -Wno-error
3) paper over it with local warning disablers
4) patch the thing locally

If the offending function really is not used at all in DPDK context then 
3) is an entirely valid option for an upstream solution, ie something 
like (untested)

--- a/drivers/net/e1000/Makefile
+++ b/drivers/net/e1000/Makefile
@@ -54,6 +54,9 @@ else
  #
  CFLAGS_BASE_DRIVER = -Wno-uninitialized -Wno-unused-parameter
  CFLAGS_BASE_DRIVER += -Wno-unused-variable
+ifeq ($(shell test $(GCC_VERSION) -ge 60 && echo 1), 1)
+CFLAGS_BASE_DRIVER += -Wno-misleading-indentation
+endif
  endif

  #


	- Panu -