From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] dm: ppc: Fixup cpu.c warning in mpc8xx
Date: Fri, 27 Jul 2012 22:56:44 +0200 [thread overview]
Message-ID: <20120727205644.5DCDC203AC0@gemini.denx.de> (raw)
In-Reply-To: <1343419212-18716-1-git-send-email-marex@denx.de>
Dear Marek Vasut,
In message <1343419212-18716-1-git-send-email-marex@denx.de> you wrote:
> cpu.c: In function ?check_CPU?:
> cpu.c:256:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Wolfgang Denk <wd@denx.de>
> ---
> arch/powerpc/cpu/mpc8xx/cpu.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
...
> - k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
> + k = (immr << 16) | readw(&immap->im_cpm.cp_dparam[0xB0]);
I think this is wrong. readw() is a little endian I/O accessor, but
PPC is all big-endian.
Guess this was untested?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"The good Christian should beware of mathematicians and all those who
make empty prophecies. The danger already exists that mathematicians
have made a covenant with the devil to darken the spirit and confine
man in the bonds of Hell." - Saint Augustine
next prev parent reply other threads:[~2012-07-27 20:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-27 20:00 [U-Boot] [PATCH] dm: ppc: Fixup cpu.c warning in mpc8xx Marek Vasut
2012-07-27 20:56 ` Wolfgang Denk [this message]
2012-07-27 21:26 ` Marek Vasut
2012-07-27 22:14 ` Wolfgang Denk
2012-07-27 22:29 ` Marek Vasut
2012-07-27 22:57 ` [U-Boot] [PATCH V2] " Marek Vasut
2012-07-30 7:45 ` Wolfgang Denk
2012-07-30 8:02 ` Wolfgang Denk
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