tree 143d4219d4249591ef1e74688673f9b78ce06aa7
parent 4ae717da8d18839487485f6ae608b8542790fdd3
author Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> 1260842431 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1260896007 -0800

drivers/char/misc.c: use bitmap/bitops functions for dynamic minor number allocation

Use DECLARE_BITMAP(), find_first_zero_bit(), set_bit() and clear_bit()
instead of rewriting code to do it with the minor number dynamic
allocation bitmap.

We need to invert the bit position to keep the code behaviour of using the
last minor numbers first, since we don't have a find_last_zero_bit.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>