On Mon, Mar 18, 2013 at 06:28:57PM +0000, Stephen Boyd wrote: > From: Stepan Moskovchenko <stepanm@xxxxxxxxxxxxxx> > > Some early versions of the Krait CPU design incorrectly indicate > that they only support the UDIV and SDIV instructions in Thumb > mode when they actually support them in ARM and Thumb mode. It > seems that these CPUs follow the DDI0406B ARM ARM which has two > possible values for the divide instructions field, instead of the > DDI0406C document which has three possible values. > > Work around this problem by checking the MIDR against Krait CPUs > with this faulty ISAR0 register and force the hwcaps to indicate > support in both modes. > > Cc: Will Deacon <will.deacon@xxxxxxx> > Signed-off-by: Stepan Moskovchenko <stepanm@xxxxxxxxxxxxxx> > [sboyd: Rewrote commit text to reflect real reasoning now that > we autodetect udiv/sdiv] > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> > --- > arch/arm/mm/proc-v7.S | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) Acked-by: Will Deacon <will.deacon@xxxxxxx> Will -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
