[coreboot] [RFC] Error out on implicit declarations

[Myles Watson]

> -----Original Message-----
> From: Carl-Daniel Hailfinger [mailto:c-d.hailfinger.devel.2006 at gmx.net]
> Sent: Monday, December 22, 2008 8:52 AM
> To: jordan at cosmicpenguin.net
> Cc: Myles Watson; Coreboot
> Subject: Re: [coreboot] [RFC] Error out on implicit declarations
> 
> On 18.12.2008 15:52, Jordan Crouse wrote:
> > Myles Watson wrote:
> >> On Thu, Dec 18, 2008 at 3:18 AM, Carl-Daniel Hailfinger <
> >> c-d.hailfinger.devel.2006 at gmx.net> wrote:
> >>
> >>> Bao, Zheng found a bug which killed SATA booting on my board.
> >>>
> >>> This happened because we do not error out on implicit function
> >>> declarations. The linker has no way of checking whether the implicitly
> >>> assumed function signature is identical to the real signature, so
> >>> mismatches can occur and these mismatches are practically impossible
> to
> >>> debug because the code looks completely correct.
> >>>
> >>> Adding -Werror-implicit-function-declaration to our CFLAGS would solve
> >>> this problem nicely, but a lot of files in the tree need to be fixed.
> 
> Fix implicit udelay src/southbridge/nvidia/mcp55/mcp55_aza.c
> Fix imlicit mdelay in src/southbridge/nvidia/mcp55/mcp55_nic.c
> 
> Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
> 
> abuild tested on all MCP55 targets.
Acked-by: Myles Watson <mylesgw at gmail.com>

Thanks,
Myles