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rt2x00: Compiler warning unmasked by fix of BUILD_BUG_ON

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A "Set" to a sign-bit in an "&" operation causes a compiler warning.
Make calculations unsigned.

[ The warning was masked by the old definition of BUILD_BUG_ON() ]

Also remove __builtin_constant_p from FIELD_CHECK since BUILD_BUG_ON
no longer permits non-const values.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
CC: Ingo Molnar <mingo@elte.hu>
CC: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Boaz Harrosh 2008-09-01 14:47:19 +03:00 committed by John W. Linville
parent 2b58b20939
commit 445df54fec
1 changed files with 2 additions and 3 deletions
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5
drivers/net/wireless/rt2x00/rt2x00reg.h
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@ -136,7 +136,7 @@ struct rt2x00_field32 {
*/
#define is_power_of_two(x) ( !((x) & ((x)-1)) )
#define low_bit_mask(x) ( ((x)-1) & ~(x) )
#define is_valid_mask(x) is_power_of_two(1 + (x) + low_bit_mask(x))
#define is_valid_mask(x) is_power_of_two(1LU + (x) + low_bit_mask(x))
/*
* Macro's to find first set bit in a variable.
@ -173,8 +173,7 @@ struct rt2x00_field32 {
* does not exceed the given typelimit.
*/
#define FIELD_CHECK(__mask, __type) \
BUILD_BUG_ON(!__builtin_constant_p(__mask) || \
!(__mask) || \
BUILD_BUG_ON(!(__mask) || \
!is_valid_mask(__mask) || \
(__mask) != (__type)(__mask)) \