On Mon, Apr 07, 2014 at 08:24:32PM +0100, Damien Lespiau wrote: > It seems like it wouldn't be too unlikely to be wanting to use a an > expression in the macro argument and things could go very wrong. > > Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx> > --- > drivers/gpu/drm/i915/i915_reg.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h > index 2315366..22d8b14 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -265,8 +265,8 @@ > * - One can actually load arbitrary many arbitrary registers: Simply issue x > * address/value pairs. Don't overdue it, though, x <= 2^4 must hold! > */ > -#define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*x-1) > -#define MI_STORE_REGISTER_MEM(x) MI_INSTR(0x24, 2*x-1) > +#define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*(x)-1) > +#define MI_STORE_REGISTER_MEM(x) MI_INSTR(0x24, 2*(x)-1) > #define MI_SRM_LRM_GLOBAL_GTT (1<<22) > #define MI_FLUSH_DW MI_INSTR(0x26, 1) /* for GEN6 */ > #define MI_FLUSH_DW_STORE_INDEX (1<<21) I was just looking at this macro myself recently (well, LRI, not SRM). I think it would be good to WARN_ON values of X which are too large. (I'd rather BUG, but we don't have to go that route). Any thoughts on that? Reviewed-by: Ben Widawsky <ben@xxxxxxxxxxxx> -- Ben Widawsky, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
