On 6/9/2017 2:03 AM, Geert Uytterhoeven wrote:
On Fri, Jun 9, 2017 at 12:17 AM, Babu Moger <babu.moger@xxxxxxxxxx> wrote:
While working on enabling queued rwlock on SPARC, found
this following code in include/asm-generic/qrwlock.h
which uses CONFIG_CPU_BIG_ENDIAN to clear a byte.
static inline u8 *__qrwlock_write_byte(struct qrwlock *lock)
{
return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN);
}
Problem is many of the fixed big endian architectures dont define
CPU_BIG_ENDIAN and clears the wrong byte.
Define CPU_BIG_ENDIAN for all the fixed big endian architecture.
Here is the orinal discussion
http://www.spinics.net/lists/devicetree/msg178101.html
Signed-off-by: Babu Moger <babu.moger@xxxxxxxxxx>
Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Hmm, the link above refers to a mail from me? ;-)
Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
One more question before I resubmit.
Dave,
I have added CONFIG_CPU_BIG_ENDIAN for sparc via my earlier patch.
https://patchwork.ozlabs.org/patch/766735/
Should I exclude sparc here?
Thanks
Babu
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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