Re: [PATCH v2] net: bluetooth: hci_sock: Use 'const void *' instead of 'void *' for 2nd parameter of hci_test_bit()

[Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>]

Hello.

On 02/04/2015 02:59 PM, David Laight wrote:

> > -static inline int hci_test_bit(int nr, void *addr)
> > +static inline int hci_test_bit(int nr, const void *addr)
> >   {
> >   	return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));
> >   }

> Is there a 'standard' function lurking that will do the above.
> On x86 the cpus 'bit test' instruction will handle bit numbers
> greater than the word size - so it can be a single instruction.

   Of course, there's test_bit().

> 	David

WBR, Sergei

--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html