On Friday 14 August 2009 23:46:54 Pavel Roskin wrote: > On Fri, 2009-08-14 at 17:29 -0400, Pavel Roskin wrote: > > On Fri, 2009-08-14 at 23:00 +0200, Michael Buesch wrote: > > > On Friday 14 August 2009 22:52:13 Pavel Roskin wrote: > > > > On Fri, 2009-08-14 at 22:15 +0200, Michael Buesch wrote: > > > > > > > > > > - b43_phy_mask(dev, 0x048A, (u16)~0x8000); > > > > > > + b43_phy_mask(dev, 0x048A, (u16)(~0x8000 & 0xFFFF)); > > > > > > > > > > > > I would just use 0x7fff here. > > > > > > That does not work if 0x8000 is a #defined bit. > > > > One approach would be to use a macro and tell sparse to ignore it > > > > #define NEGATE(x) (__force typeof(x))(~x) > > Scratch that. It has no change to work for constants unless we hardcode > the size, e.g. by having NEGATE16, NEGATE32 etc. > > The best I could do is: > > #define NEGATE16(x) (0xFFFF & ~x) > b43_phy_mask(dev, 0x048A, NEGATE16(0x8000)); I think the real question is whether this does really prevent any bugs or whether it just introduces new possibilities for bugs. void my_func(u32 x); my_func(NEGATE16(0x8000)); -- Greetings, Michael. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
