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

David Laight
2015-02-04T12:00:27Z

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From: Chen Gang S
> -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.

David

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