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Change read_bit() to return 0 or -1UL, rather than 0 or 1.

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Michael Brown
2006-06-12 19:29:50 +00:00
parent 2e49441535
commit 51a36f1cfb
3 changed files with 7 additions and 3 deletions
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6
src/drivers/bitbash/bitbash.c
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@@ -48,8 +48,10 @@ void write_bit ( struct bit_basher *basher, unsigned int bit_id,
* @v bit_id Bit number
* @ret data Value read
*
* @c data will always be either 0 or 1.
* @c data will always be either 0 or -1UL. The idea is that the
* caller can simply binary-AND the returned value with whatever mask
* it needs to apply.
*/
int read_bit ( struct bit_basher *basher, unsigned int bit_id ) {
return ( basher->read ( basher, bit_id ) ? 1 : 0 );
return ( basher->read ( basher, bit_id ) ? -1UL : 0 );
}